Comment 5 for bug 1815330

Reviewed: https://review.opendev.org/c/openstack/tooz/+/848653
Committed: https://opendev.org/openstack/tooz/commit/85d0a8b2e09e37639ad29bb3bbcbbad55719dd8e
Submitter: "Zuul (22348)"
Branch: stable/train

commit 85d0a8b2e09e37639ad29bb3bbcbbad55719dd8e
Author: Bob.Haddleton <email address hidden>
Date: Sat Feb 9 21:24:54 2019 -0600

    RedisLock release() should not check if the lock has been acquired

    The RedisDriver coordinator _stop() method removes the lock from the
    _acquired_locks set before calling the release() method on the lock,
    so the release() method should not check to see if the lock is in the
    set, since it never will be.

    This was preventing the coordinator's _stop() method from releasing
    the locks, so they had to timeout before another group member could
    take over as leader.

    Change-Id: Ie23d88f1a05983d7465f18a329cabc23d789a628
    Closes-Bug: 1815330
    (cherry picked from commit 842c7404b2d01c5dd718c14bb55f0cd47471f0e1)