ceph: do not check ok-to-stop fs-mirror
ceph: do not check ok-to-stop fs-mirror

The fs-mirror has no "ok-to-stop" command so let's skip it.

Signed-off-by: Sébastien Han <62d754cc350e84d3b1c32ae79f976f5348e74a40@redhat.com>

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