Merge PR #40938 into master

Merge PR #40938 into master

* refs/pull/40938/head:
	mgr/cephadm: less noise about osd specs
	mgr/cephadm: kick serve loop when adding/removing labels
	mgr/cephadm: do not place osds on _no_schedule hosts
	doc/cephadm: document _no_schedule label
	mgr/cephadm: fix 'orch ls' count to reflect schedulable hosts
	mgr/cephadm: do not schedule on _no_schedule hosts

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