CephFS drivers in OpenStack Manila are directing
mgr commands to the mgr by specifying mon-mgr as
the target [0]. This target (mon-mgr) was added
to Ceph in Octopus [1].
We would need a version check in order to set the
correct target while we wait on the backport on Ceph
to land [2].
[0] 3ea5d50a23
[1] 4000d500c0
[2] https://tracker.ceph.com/issues/51039
Closes-Bug: #1930459
Change-Id: I1a1079df8e104c5ddba29cb614eb4e02a304082e