Merge PR #36394 into master

* refs/pull/36394/head:
	qa: add method run ceph cluster command with better interface
	cephfs: allow only "good" characters

Reviewed-by: Varsha Rao <varao@redhat.com>
Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>

diff --cc PendingReleaseNotes
Simple merge

diff --cc qa/tasks/cephfs/test_admin.py
Simple merge

diff --cc qa/tasks/cephfs/test_volumes.py
Simple merge

diff --cc src/mon/MonCommands.h
Simple merge