Merge PR #41463 into pacific

* refs/pull/41463/head:
	cephadm: write config files as utf-8
	cephadm: reduce `noqa` usage
	cephadm: apply autopep8 changes
	cephadm: introduce autopep8
	cephadm: remove `verify-prereqs` subcommand
	cephadm: add HAProxy sysctl settings
	cephadm: move keepalived sysctl settings
	cephadm: apply osd sysctl settings
	mgr/cephadm: warn users if they try to pass a daemon to 'orch rm'
	qa/suites/orch/rook: disable centos for now
	qa/suites/orch/rook/smoke: initial smoke suite
	qa/tasks/rook: ROOK_HOSTPATH_REQUIRES_PRIVILEGED=true on centos
	qa/tasks/rook: simplify shutdown
	qa/tasks/rook: archive logs
	qa/tasks/rook: more orderly cluster teardown
	qa/tasks/rook: deploy ceph via rook on top of kubernetes
	qa/tasks/kubeadm: install kubernetes with kubeadm
	qa/suites: move rados/cephadm -> orch/cephadm; symlink
	qa/tasks/cephadm: add whitespace between functions
	qa/tasks/cephadm: clean up ctx.manager setup
	mgr/cephadm: pin haproxy image to 2.3.z
	mgr/cephadm: fix issue with missing prometheus alerts
	mgr/cephadm: check version in upgrade check
	mgr/cephadm: Fix OSD replacement in hosts with FQDN host name
	mgr/cephadm: fix prometheus jinja template
	doc/cephadm: rewrite "disabling monitoring"
	mgr/cephadm: induce retune of osd memory on osd creation
	qa/tasks/cephadm.conf: autotune osd memory by default
	mgr/cephadm: do not autotune when _no_autotune_memory label is present
	mgr/cephadm: autotune osd memory
	common/options: add osd_memory_target_autotune
	mgr/cephadm: report memory usage, request (limit) in 'orch ps'
	doc/cephadm/host-management: document _admin group
	mgr/orchestrator: fix help formatting
	mgr/cephadm/schedule: fix filter message
	mgr/cephadm: Use `cephfs-mirror` caps profile

Reviewed-by: Juan Miguel Olmo <jolmomar@redhat.com>
Reviewed-by: Michael Fritch <mfritch@suse.com>