mon: fix dup mds takeover
mon: fix dup mds takeover

Allow a standby to take over for a single MDS only by consistently looking
at the pending_mdsmap and not mdsmap.  Mixing the two leads to all kinds
of confusion.

Signed-off-by: Sage Weil <c5b6ff1fd4f0bde10db63d7a3e07166cf6c4229f@dreamhost.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph