The amqp_auto_delete option needs this patch:
https://review.opendev.org/c/openstack/puppet-oslo/+/944132
Since transient_queues_ttl is also managed by oslo::messaging::rabbit,
there's no way to use keystone_config to set it, so this patch is
mandatory for one to set rabbit_transient_queues_ttl in keystone.conf.
Change-Id: I86e796d2ac9879eea85bfe822616083c4dc588d1