When a mon is failed over, the new mon is started before the old mon
is removed from quorum and purged from the cluster. If the mon has
anti-affinity, in small clusters or specific toplogies where sufficient
nodes are not available, the new mon may be prevented from starting simply
because the dead mon pod still exists. To ensure a clean failover, the
dead mon pod must first be stopped before the new mon is started.
Signed-off-by: Travis Nielsen <tnielsen@redhat.com>