Sync rpc fix from oslo-incubator

Sync the following fixes from oslo-incubator:

ef406a2 Create a shared queue for QPID topic consumers
e227c0e Properly reconnect subscribing clients when QPID broker restarts

Closes-bug: #1251757
Closes-bug: #1257293

Change-Id: I45257c62168163d2d4ceda994c94ff2d16a27300
Merge "Sync rpc fix from oslo-incubator"