Allow quorum queues for internal use by Federation

[lukebakken]

Related to these items:

• A way to configure durability of the queues used by exchange federation #2544
• https://pivotal-esc.atlassian.net/browse/VESC-1034

Currently, if you federate an exchange the upstream node creates an internal queue from which the downstream consumes. These internal queues can be mirrored, but only with classic mirroring. Quorum queues should be an option.

This addresses the scenario in which the node hosting the internal queue for federation on the upstream goes down. Without being mirrored this effectively stops federation.

[d4nnyx]

+1