Updated openstack/openstack
Project: openstack/nova  6a2bab6574a867cd63085d22b4af72bd6d262c1f
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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: Ic21e54efa3a0263d53481ef500fb949544dae1d2