The patch replaces oslo.rpc by oslo.messaging.
The important changes:
- On the collector, the queue name and the topic are now the same
(ie: metering, instead of ceilometer.collector.metering for the queue
and metering for the topic)
- Same for the alarm partitionner the queue is no more prefixed by
ceilometer.alarm.
Implements switch-to-oslo.messaging
Change-Id: Ia5e4ff1dd1d419c090b8039627234ae7f07e8660