Sync rpc fix from oslo-incubator

Sync the following fixes from oslo-incubator:

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

Change-Id: I286edf6bc4a677aa61f60da785802c19878c79c7
Closes-bug: #1251757
Closes-bug: #1257293
Fix a typo in log exception in the metering agent

This patch fixes a typo when there is a exception
when the agent try to invoke a method of the driver.

Change-Id: I4fcf19fa84f178348abfb3563bbfd52f0dfcc095
Closes-bug: #1256041
Merge "Fix a typo in log exception in the metering agent"
Merge "Sync rpc fix from oslo-incubator"