QPID-5404: HA broker message duplication when deleting a queue with an alt-exchange

The old code ran auto-delete on the backup on disconnect.  This reroutes
messages onto the alt queue with incorrect replication IDs from the original
queue, and then replicates duplicate rerouted messages from the primary.  The
solution is to process auto deletes on the new primary and let them replicate to
the backups.

- Move all auto-delete logic into QueueReplicator
- Primary process auto-delete on QueueReplicator as part of promotion.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1549844 13f79535-47bb-0310-9956-ffa450edef68