* Now it is impossible to set the same
pool name for queue listeners which use
event engine. By default, it creates
an unique pool named <hostname> so each
event engine is in its own pool. Due to
that and documentation of oslo.messaging,
any message that comes to topic duplicates
across all event engines.
* But if they have the same pool name, the message
will be delivered only to one of event-engines
(by round-robin).
* This patch adds a possibility to change listener pool
name for each event-engine.
Change-Id: Iea83c461694a26d9cea810e6cc6169a0fe3f9f06
e0eeca6706