Comment 2 for bug 1568414

Reviewed: https://review.openstack.org/303669
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=f64237d89056d75300aa9cafaed679b728407261
Submitter: Jenkins
Branch: master

commit f64237d89056d75300aa9cafaed679b728407261
Author: Diana Clarke <email address hidden>
Date: Fri Apr 8 20:55:59 2016 -0400

    Fix database poison warnings

    The following warning appears in the unit test logs a number of times.
    This patch fixes some of those warnings by mocking the get instance
    calls higher up (Instance.get_by_uuid vs. db.instance_get_by_uuid).

        "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.

    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.

    Related-Bug: #1568414
    Change-Id: I76422d8c13559322bba0be0c24882330fb947af1