cephfs admin: add informational functions for cephfs mirroring
cephfs admin: add informational functions for cephfs mirroring

Add the functions DaemonStatus and PeerList which provide information
about the cephfs mirroring daemon and mirroring peers.

Signed-off-by: John Mulligan <eda8ad33169deab44f9fe65847f99e368da6c91b@redhat.com>

ceph/go-ceph,ceph/go-ceph,ceph/go-ceph