Use rabbitmq notifications for glance

* Add support for rabbit_hosts and rabbit_ha_queues for glance.
* Qpid support is TODO (sync it from upstream as well, then we start to support it again)
* glance::notify::rabbitmq is synced from master trunc puppet-glance in upstream
  * synced its rspecs as well
  * applied a patch in order to fix some existing issues in upstream

Closes bug: #1308104

Change-Id: Ie7e29aa8c9427ec890f7247b6e93116e7dd83b0c
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>