
As discussed at the PTG [0] and subsequent Cinder meetings [1], set a minimum supported version of Ceph. Also specify that we expect the Ceph client and server versions to be in alignment. [0] https://wiki.openstack.org/wiki/CinderWallabyPTGSummary#Ceph:_Minimum_supported_version [1] http://eavesdrop.openstack.org/meetings/cinder/2020/cinder.2020-11-11-14.00.log.html#l-202 Change-Id: Ifd4cf76158350f60f84e3066ff41cc6ac5c2a3c3