Merge PR #34272 into master

* refs/pull/34272/head:
	mgr/PyModuleRegistry: ignore 'obsolete' modules
	qa/suites/fs/upgrade: start with msgr2
	qa/suites/fs/upgrade: s/mimic/nautilus/
	qa/suites/upgrade: whitelist when orchestrator_cli can't be loaded
	qa/standalone/mon/msgr-v2-transition: remove test
	mon/MgrMonitor: disable orchestrator_cli if >= octopus
	qa/suites/ugprade: remove mimic -> pacific upgrade tests
	qa/standalone/mon/misc: update TEST_mon_features
	mon/MgrMap: use always_on_modules from most recent release
	mon/MonCommands: require-osd-release pacific
	qa/suites/rados/thrash-old-clients: adjust octopus package list for el7
	doc/dev/release-kickoff-checklist: include ceph-build change
	qa/workunits/cephtool/test.sh: fix require-osd-release test
	mon/MgrMonitor: define mgr modules for pacific
	doc/dev/release-checklists: generalize
	doc/dev/release-kickoff-checklist: quotes
	qa/suites/rados/thrash-old-clients/1-install/octopus
	qa/releases/pacific.yaml
	mds/cephfs_features: CEPHFS_CURRENT_RELEASE
	doc/dev/release-kickoff-checklist: a few other items
	osd: remove redundant check
	mon/OSDMonitor: make pacific changes
	mon/mon_types: add mon pacific feature
	include/ceph_features: define SERVER_PACIFIC
	include/ceph_features: fix whitespace
	mon: persistent INCOMPAT_PACIFIC item
	ceph-volume: __release__ == pacific
	script: update backport scripts for now-released octopus
	common: pacific release constants
	doc/dev/release-kickoff-checklist
	src/ceph_release: pacific, 16, dev
	CMakeLists: 16.0.0

Reviewed-by: Neha Ojha <nojha@redhat.com>
Reviewed-by: Nathan Cutler <ncutler@suse.com>