Comment 28 for bug 1568414

Reviewed: https://review.openstack.org/346172
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=af9aa1c24f810633ee0a5efacb84518c3e4e6c5d
Submitter: Jenkins
Branch: master

commit af9aa1c24f810633ee0a5efacb84518c3e4e6c5d
Author: Diana Clarke <email address hidden>
Date: Fri Jul 22 14:27:37 2016 -0400

    Fix database poison warnings, part 11

    The following warning appears in the unit test logs a number of times.

        "UserWarning: This test uses methods that set internal oslo_db
    state, but it does not claim to use the database. This will conflict
    with the setup of tests that do use the database and cause failures
    later."

    This patch fixes the one warning from:

        unit.virt.libvirt.test_imagecache.py

    Note that this warning is only emitted once per unit test worker, so new
    offenders will show up in the logs each time you fix a test until they
    are all gone.

    Change-Id: I057852125249d41d0b645a68013fef62249a2af7
    Related-Bug: #1568414