Comment 20 for bug 1599104

Reviewed: https://review.openstack.org/366717
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=d2bb3637b38ea3defdf4fb3330c1c2766d66314c
Submitter: Jenkins
Branch: stable/mitaka

commit d2bb3637b38ea3defdf4fb3330c1c2766d66314c
Author: ricolin <email address hidden>
Date: Wed Aug 17 15:06:34 2016 +0800

    Add RabbitMQ expiration policies for convergence

    Right now heat can support convergence mode, means we will give it
    chances to raise bug 1599104. We simply add policies for worker queues.
    This fix services with interruption signal and leave the target queues
    open. The number of queues keep growing by repeat above action.
    This patch add a expiration for queues. allow queues to be close as
    long as they didn't been used for a long period of time(1 hour).
    This fix must solve problem with growing number of RabbitMQ queues.

    Change-Id: Icda32000f391780c4e3d5d3ebcc519bf853283b7
    Related-Bug: #1599104
    (cherry picked from commit 46eed2a513518b34d26edb869c1710b91650add1)