ceph: tests use v14.2.12 due to broken osds in v14.2.13
ceph: tests use v14.2.12 due to broken osds in v14.2.13

The ceph v14.2.13 release has breaking changes for the ceph-volume batch
scenario that is preventing non-pvc OSDs from being created. In the short
term we will pin the tests to v14.2.12 and separately we will need to
address the changes needed and/or wait for a fix from ceph.

Signed-off-by: Travis Nielsen <a8b474fdb3f77f44446f0ab9ddca8147b09b3a9e@redhat.com>

rook/rook,rook/rook,rook/rook,rook/rook,rook/nfs,rook/nfs,rook/rook,rook/nfs