Comment 2 for bug 1942933

Reviewed: https://review.opendev.org/c/openstack/oslo.messaging/+/807826
Committed: https://opendev.org/openstack/oslo.messaging/commit/7e8acbf87070354cd2438f3ab0821d035c2e7d92
Submitter: "Zuul (22348)"
Branch: master

commit 7e8acbf87070354cd2438f3ab0821d035c2e7d92
Author: Hervé Beraud <email address hidden>
Date: Wed Sep 8 08:34:13 2021 +0200

    Adding support for rabbitmq quorum queues

    https://www.rabbitmq.com/quorum-queues.html

    The quorum queue is a modern queue type for RabbitMQ implementing a
    durable, replicated FIFO queue based on the Raft consensus algorithm. It
    is available as of RabbitMQ 3.8.0.

    the quorum queues can not be set by policy so this should be done when
    declaring the queue.

    To declare a quorum queue set the x-queue-type queue argument to quorum
    (the default is classic). This argument must be provided by a client at
    queue declaration time; it cannot be set or changed using a policy. This
    is because policy definition or applicable policy can be changed
    dynamically but queue type cannot. It must be specified at the time of
    declaration.

    its good for the oslo messaging to add support for that type of queue
    that have multiple advantaged over mirroring.

    If quorum queues are sets mirrored queues will be ignored.

    Closes-Bug: #1942933
    Change-Id: Id573e04c287e034e50626daf6e18a34735d45251