build-doc: allow building docs on fedora 30

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit e17e4bfcc048abd1757c3efd12c7443169d67477)

rgw/pubsub: backporting pubsub/notifications to nautilus

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>

rgw/pubsub: add notification filtering

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 543f8f7a2729ab8bd2e1a14d98a3fd2c2e19f9bd)

rgw/pubsub: support deletion markers and multipart upload

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 923799fd960f97b8ddbbe0e106139069d640588b)

rgw/pubsub: push notifications documentation

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit c345566831c72446c8250f630337825e526847a8)

rgw/pubsub: push notifications from ops

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit dc31b030ea30f3b7bfdeb9fa92e303892d17138a)

rgw/pubsub: allow pubsub REST API on master

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit a14353496d1f75a303495f538141a1a54ff28c60)

rgw/pubsub: service reordering issue

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit e91489f443b5b086ef96b51051d2726728412ff5)

rgw/pubsub: fix amqp topic bug. add disabled end2end push tests

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit abfd6f72db3b6e1a797a660a4a601a33605e5f25)

rgw/pubsub: fix duplicates due to multiple zone synching

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 38c23833b35279cb6e1a9b575b5a463959fed348)

rgw/pubsub: run pubsub tests even if multisite fails

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 1df809144c2ed96a715c8bd3df6ed5ef48399dd3)

rgw/pubsub: make new PSZone parameters optional in test

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 0b6909c1e9832d7a6f375f38f32bed58d1e161c2)

rgw/pubsub: add conf parameter for full/incremental sync

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit af4c2d5dbb42170ade4ad78088b80b0b5a357c5a)

rgw: add tenant as parameter to User in multisite tests

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 4def929395bce39e9a130d0e8740790815a6a503)

rgw/pubsub: revert the RGWSysObjectCtx change

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 10b8b57d723971604cbabf984291232c194a55ec)

rgw/pubsub: cleanup tests for multiple notifications

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit b4005db82da1627a03d96baa45081fbb329070b1)

rgw/pubsub: fix doc on updates. attempt to fix multi-notifications

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 3279a786ba0abc9d1955f03eaa5f94da0d12ed22)

rgw/pubsub: fix more test issues with teuthology failures

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 51fc8a40e3484bcc16244723b091ba7f3157abfb)

rgw/pubsub: fix test issue with 3 zones

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 83e5571c873a6f459aaf9a7c42a532339ed2a1b3)

rgw/pubsub: add another zone for pubsub

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit d8d817a6006e38b52f922b714870c32b9a76a169)

rgw/pubsub: make sure bucket is empty before deletion

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 588e0c0e23f66eb35a056ad110404a97fa219a15)

rgw/pubsub: fix "no module named rgw_multi.zone_ps"

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit dfa501cfb77e72fe3e4cb2454aea99916705b812)

rgw/pubsub: fix "no module named rgw_multi.tests"

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit b03a56fe930be0ff7bad4e375e22a8e2ca0fed76)

rgw/pubsub: actually adding the ps tests

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 8362ecc7dfd8056567b74fdaaa52809082f15421)

rgw/pubsub: fix popping the wrong key

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 2d7c07bbeb9887d76b89eded7458ac7af8068026)

rgw/pubsub: fix topic arn. tenant support to multisite tests

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit be64adf916e0f318b22b57cedd02c2b0b2a503f2)

rgw/pubsub: handle subscription conf errors better

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit f4e3745bcb9f75814b4052e2b651c25a39c2f17b)

rgw/pubsub: more info on notification deletion compatibility

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>
(cherry picked from commit 2cf1872bdf63e9093884b6d3bbc20b9a42963d53)

rgw/pubsub: fix comments from PR #27493

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>
(cherry picked from commit cb256dd92ac39baddce252acb634b587653da4f3)

rgw/pubsub: clarify pubsub zone configuration

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>
(cherry picked from commit 89ddc407b48959831450638f14929f553511d240)

rgw/pubsub: wrong link in S3 doc

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 98e6a0434609d7b29d61166276419eca1d552ad0)

rgw/pubsub: fix documentation link errors

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit dc904249a00aacecf9a06a26223b5b2d5c46ace2)

rgw/pubsub: fix comments from PR #27091

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit a0b43fa26c9ba1bebe6553c84fd98fad3a3d28ad)

rgw/pubsub: add more S3 compatibility documentation

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit e1e39d627ec9a044f9f7428400dd379350fc4bbb)

rgw/pubsub: test and doc bucket deletion impact on notifications

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit cb6e894937098999e4eb7d2c13c2f180329f2432)

rgw/pubsub: avoid static creation of amqp manager

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 376a3df0d12b544a0378a1467fcf4b2c32fd8afa)

rgw/pubsub: add s3-compatible API documentation

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 9fd0f873188532c7552f087f65c5b279eb1fc3ca)

rgw/pubsub: allow for endpoint definition via topics

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 8ac119fdd50b6306e4b338e3f0b4731818c6e6c8)

rgw/pubsub: implement S3 compatible get/delete APIs

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 0f8671b3a13af2713fed51f15c83cca8ef19dd19)

rgw: pubsub support s3 records. refactor ARN

Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>
(cherry picked from commit 2bd353233112ead32181b94a2af1b04e3fa9e1de)

rgw/pubsub: initial version of S3 compliant API

(cherry picked from commit 2e94f4d1cecb5164bc646fb6b088dd197f878263)
Signed-off-by: Yuval Lifshitz <yuvalif@yahoo.com>

Merge pull request #29487 from rhcs-dashboard/nautilus-run-dashboard-api-tests

nautilus: mgr/dashboard: run-backend-api-tests.sh improvements

Reviewed-by: Lenz Grimmer <lgrimmer@suse.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>
Reviewed-by: Laura Paduano <lpaduano@suse.com>
Reviewed-by: Sebastian Wagner <swagner@suse.com>

Merge tag 'v14.2.4' into nautilus

v14.2.4

This was required because the release was done with ceph-volume changes
only, and omitting the other code changes that were untested.

mgr/dashboard: run-backend-api-tests.sh CI improvements

As there is now a jenkins job to run this script
(see https://github.com/ceph/ceph-build/pull/1351),
this refactoring adapt the script to be run in a jenkins job as well as locally.

Signed-off-by: Alfonso Martínez <almartin@redhat.com>
(cherry picked from commit 7563f8b6d661886b7b3c7a259b70433a8962f55a)

pybind/mgr: install setuptools >= 12

otherwise we have
```
  Running setup.py egg_info for package apache-libcloud

    libcloud/utils/py3.py:76: UserWarning: Missing backports.ssl_match_hostname package
      warnings.warn("Missing backports.ssl_match_hostname package")
    Traceback (most recent call last):
...
      File "build/bdist.linux-x86_64/egg/setuptools_scm/version.py", line 66, in _warn_if_setuptools_outdated

...
setuptools_scm.version.SetuptoolsOutdatedWarning: your setuptools is too old (<12)
...
Command python setup.py egg_info failed with error code 1 in /tmp/tmp.i95Fg82Ea4/venv/build/apache-libcloud
```

and more important thing is, setuptools >= 12 allows us to install the
python modules in venv, without uninstalling existing modules if they
are also installed in by system packages.

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 2094c2f2fd6ac0f2028fcaf22f2b51a306e60172)

mgr/dashboard: set python binary for teuthology venv

* Added env. var. to set python binary when creating teuthology venv.
* venv/bin/activate: run after setting PATH (as it does the last PATH export).

Signed-off-by: Alfonso Martínez <almartin@redhat.com>
(cherry picked from commit 522cbe8a731cf01a48dd57b6169c66e4965ba272)

14.2.4

14.2.4

ceph-volume tests create a test file for checking unicode output

Signed-off-by: Alfredo Deza <adeza@redhat.com>

ceph-volume tests create a shell test for functional unicode

Signed-off-by: Alfredo Deza <adeza@redhat.com>

ceph-volume tests verify new logging fallback and encodings in terminal

Signed-off-by: Alfredo Deza <adeza@redhat.com>

ceph-volume create a logger for the terminal

Signed-off-by: Alfredo Deza <adeza@redhat.com>

ceph-volume: instantiate the new terminal logger in main()

Signed-off-by: Alfredo Deza <adeza@redhat.com>

ceph-volume terminal remove unicode stream handler

This caused problems in environments where stderr was redirected, since
stderr sets the encoding to None. Getting it back again allows
everything to work correctly, and keeps all the current unit tests
passing

Signed-off-by: Alfredo Deza <adeza@redhat.com>

Merge pull request #29769 from alfredodeza/nautilus-bz-1738379

nautilus ceph-volume: use the OSD identifier when reporting success

Reviewed-by: Jan Fajerski <jfajerski@suse.com>

Merge pull request #30294 from alfredodeza/nautilus-rm41378-2

nautilus ceph-volume: pre-install python-apt and its variants before test runs

Reviewed-by: Jan Fajerski <jfajerski@suse.com>

Merge pull request #30307 from alfredodeza/nautilus-rm40664

nautilus ceph-volume  zap always skips block.db, leaves them around

Merge pull request #30300 from alfredodeza/nautilus-rm41660

nautilus: ceph-volume: fix stderr failure to decode/encode when redirected

Reviewed-by: Jan Fajerski <jfajerski@suse.com>

ceph-volume tests: verify that wipefs tries several times

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 845e62cb4ba2636325304db2c2d65a185ace25cf)

ceph-volume lvm.zap: retry wipefs several times to prevent race condition failures

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit b7b8b106fa485d3b8345b583fbc7f74e30cbc03e)

ceph-volume tests create a test file for checking unicode output

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 79196354aca3b3d30c7de1e2ac8b5a3c06ee8330)

ceph-volume tests create a shell test for functional unicode

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 595e492783283359b613d199a75f3e7495bfb9ed)

ceph-volume tests verify new logging fallback and encodings in terminal

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit ee18ebc078b2d380b88f3726737184f34345e2f3)

ceph-volume terminal remove unicode stream handler

This caused problems in environments where stderr was redirected, since
stderr sets the encoding to None. Getting it back again allows
everything to work correctly, and keeps all the current unit tests
passing

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit fe66e01f6a4b19bb15695537713a629a951b28ce)

ceph-volume: instantiate the new terminal logger in main()

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit bfb8422e262dcce49c50610a3977bfe1edc2a435)

ceph-volume create a logger for the terminal

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 95b16b516c0736839fe50f12ecbeb7cd62c67335)

ceph-volume create a new tox.ini for shell-based tests

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 4612ab3ae62a3e8e1cc9e51489feab0c938296d3)

ceph-volume tests pre-instrall python-apt to prevent auto-install failing later

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 40cac7b9510f7904c2f9dfb1294d809e04bdcf7e)

Merge pull request #30283 from tchaikov/wip-nautilus-c++17

nautilus: cmake: enforce C++17 instead of relying on cmake-compile-features

Reviewed-by: Casey Bodley <cbodley@redhat.com>

cmake: enforce C++17 instead of relying on cmake-compile-features

this change is a follow-up of #30114

in FindBoost.cmake, we try to deduce the C++ flags by checking the C++
features offered by different C++ standard like C++98, C++11 and C++14
against the ones required by different boost component. then choose the
C++ dialect based on the `CXX_STANDARD` and `COMPILE_FEATURES`.

in the case of nautilus, since cmake 3.5.1 does not offer
CXX_STANDARD=17 support by then, we have to add `-std=c++17` to
`CMAKE_CXX_FLAGS` manually. but unfortunately, the
`cmake-compile-features` machinary does not check `CMAKE_CXX_FLAGS` for
the default C++ standard required by the project. so it falls back to
the minimal C++ standard required by the target.

since Boost::fiber and Boost::context share the same C++ feature set
dependencies which can be fulfilled by C++11, and by default,
`CXX_EXTENSIONS` is enabled, `--std=gnu++11` is used as we are using gcc
in our building hosts. so we have CXX_FLAGS like:

-std=c++17 ... -std=gnu++11

when compiling targets linked against Boost::context. and it seems the
last one takes effect. that's why some targets failed to compile if
the makefiles were generated with cmake 3.5.1.

in this change, `INTERFACE_COMPILE_FEATURES <features>` is replaced with
`CXX_STANDARD 17`. this renders this setting a no-op, as CMake 3.5.1
does not translate this setting to any CXX_FLAGS. but this does not
hurt, as we use C++17 project-wide, and C++17 is able to offer all
compile features required by Boost::context.

Signed-off-by: Kefu Chai <kchai@redhat.com>
Conflicts: this change is not cherry-picked from master, because in
  master, we use cmake 3.10 and up which offers the support of
  `CXX_STANDARD=17`, hence cmake is able to bump up the C++ standard
  to C++17 instead of falling back to C++11.

Merge pull request #30114 from tchaikov/wip-nautilus-CXX_FLAGS

nautilus: seastar,dmclock: use CXX_FLAGS from parent project

Reviewed-by: Casey Bodley <cbodley@redhat.com>
Reviewed-by: Nathan Cutler <ncutler@suse.com>

Merge branch 'nautilus' of github.com:ceph/ceph into nautilus

dmclock: pick up change to use specified C++ settings if any

see https://github.com/ceph/dmclock/pull/73

so dmclock won't pass `-std=c++11` even if the parent project already
have `-std=c++17` in CXX_FLAGS.

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit fb83b331de9636e5de3d756e490748d5bfb9c4dc)

Conflicts: dmclock
  this change is not cherry-picked from master, because master is using
  a different dmclock version. so in this change, only the minimum fix
  is included.

seastar: pick up change in fmt submodule

see https://github.com/ceph/fmt/pull/1

so fmt won't fallback to C++11 if `CMAKE_CXX_STANDARD` is not set

Signed-off-by: Kefu Chai <kchai@redhat.com>
this change is not cherry-picked from master, because

- the seastar submodule in nautilus is not in sync with that in
  master
- master is not using fmt submodule included by seastar anymore
- master is using cmake 3.10, so there is no need to address
  this issue in master on fmt front.

Merge pull request #30093 from jan--f/wip-41614-nautilus

nautilus: ceph-volume: lvm list is O(n^2)

Reviewed-by: Alfredo Deza <adeza@redhat.com>

14.2.3

ceph-volume: test number of times LVs list was created

Add a test that cofirm that the LVs list was created only once when
calling devices.lvm.listing.list()

Signed-off-by: Rishabh Dave <ridave@redhat.com>
(cherry picked from commit 20d6264538dab444c0ef13f40c6c21ec3d2057f8)

ceph-volume: reuse list of LVs

Avoid creating of list of LVs in different methods of the same module
and resue them.

Fixes: https://tracker.ceph.com/issues/37490
Signed-off-by: Rishabh Dave <ridave@redhat.com>
(cherry picked from commit ab3a58e78124a984d162b2f63992d01c5e59e2a7)

Merge pull request #29945 from trociny/wip-41475-nautilus

nautilus: pybind/mgr/rbd_support: ignore missing support for RBD namespaces

Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #29975 from theanalyst/nautilus-beast-endpoint-fix

nautilus: rgw: asio: check the remote endpoint before processing requests

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29977 from yuriw/wip-yuriw-41513-nautilus

qa/tests: adding mgr.x into the restart/upgrade sequence before monitors

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

qa/tests: adding mgr.x into the restart/upgrade sequence before monitors

Fixes: https://tracker.ceph.com/issues/41513
Signed-off-by: Yuri Weinstein <yweinste@redhat.com>

rgw: asio: check the remote endpoint before processing requests

`socket.remote_endpoint()` can throw exceptions corresponding to errors in the
`getpeername` syscall, make sure these are handled.

Fixes: CVE-2019-10222, https://tracker.ceph.com/issues/40018
Signed-off-by: Abhishek Lekshmanan <abhishek@suse.com>
(cherry picked from commit caa653196856ecdf50519a9a33195d5c4e3372af)

Conflicts:
src/rgw/rgw_asio_frontend.cc
conflicts due to missing yield ctx in nautilus

pybind/mgr/rbd_support: ignore missing OSD support for RBD namespaces

During upgrades, the OSDs might not yet have been upgraded yet and
therefore might be missing namespace support.

Fixes: https://tracker.ceph.com/issues/41029
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 10c0c806819741012e1c440c38fac17682125d9a)

pybind/rbd: new OperationNotSupported exception

This will help catch errors where the backing OSDs do not support
a given RBD feature.

Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 97c1a120b7e7d934dd5d2456fd1fb4c1d0e891ec)

Merge pull request #29918 from badone/wip-nautilus-tracker-41518-grafana-server

nautilus: qa/ceph-ansible: Disable dashboard

Reviewed-by: Yuri Weinstein <yweinste@redhat.com>

Merge pull request #29899 from alfredodeza/nautilus-rm41378

nautilus ceph-volume tests set the noninteractive flag for Debian

Reviewed-by: Andrew Schoen <aschoen@redhat.com>

nautilus: qa/ceph-ansible: Disable dashboard

Recently a dashboard playbook was added which will fail without a
grafana server so disabling the dashboard

Fixes: https://tracker.ceph.com/issues/41521
Signed-off-by: Brad Hubbard <bhubbard@redhat.com>
(cherry picked from commit 131f5a145adf21d402e39ac2c151664eb8ccec76)

ceph-volume tests set the noninteractive flag for Debian, to avoid prompts in apt

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 89231c9a60a46ba0691f787efbfe5ab35f05c679)

Merge pull request #29805 from yuriw/wip-yuriw-41384-nautilus

qa/tests: changed running rbd tests test_librbd_python.sh from…

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

qa/tests: changed running rbd tests test_librbd_python.sh from tag: v14.2.2

Fixes: https://tracker.ceph.com/issues/41384
Signed-off-by: Yuri Weinstein <yweinste@redhat.com>

Merge pull request #29801 from smithfarm/wip-41263-nautilus

nautilus: rgw_file:  advance_mtime() takes RGWFileHandle::mutex unconditionally

Reviewed-by: Matt Benjamin <mbenjami@redhat.com>
Reviewed-by: Yuri Weinstein <yweinste@redhat.com>

rgw_file: dont deadlock in advance_mtime()

Fixes: https://tracker.ceph.com/issues/41173
Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
(cherry picked from commit 0d3338c2d2271bbf6f4c7774ad175f7ee42d07f6)

Merge pull request #28862 from liewegas/wip-bluefs-extents-nautilus

nautilus: os/bluestore/bluefs_types: consolidate contiguous extents

Reviewed-by: Igor Fedotov <ifedotov@suse.com>

Merge pull request #29191 from mynaramana/patch-1

doc/rados: Correcting some typos in the clay code documentation

Reviewed-by: Kefu Chai <kchai@redhat.com>

doc/rados: Correcting some typos in the clay code documentation
Signed-off-by: Myna <mynaramana@gmail.com>

Merge pull request #29551 from pdvian/wip-40882-nautilus

nautilus: rbd: Reduce log level for cls/journal and cls/rbd expected errors

Reviewed-by: Mykola Golub <mgolub@mirantis.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #29722 from dillaman/wip-39499-nautilus

nautilus: librbd: snapshot object maps can go inconsistent during copyup

Reviewed-by: Mykola Golub <mgolub@mirantis.com>

Merge pull request #29723 from dillaman/wip-40511-nautilus

nautilus: librbd: improve journal performance to match expected degredation

Reviewed-by: Mykola Golub <mgolub@mirantis.com>

Merge pull request #29725 from dillaman/wip-41078-nautilus

nautilus: mgr/rbd_support: support scheduling long-running background operations

Reviewed-by: Mykola Golub <mgolub@mirantis.com>