Comment 5 for bug 1627838

Reviewed: https://review.openstack.org/378751
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=35f7942ff9a6dd972994dfa4162c96eaf0b21e02
Submitter: Jenkins
Branch: stable/newton

commit 35f7942ff9a6dd972994dfa4162c96eaf0b21e02
Author: melanie witt <email address hidden>
Date: Mon Sep 26 20:08:33 2016 +0000

    Stop overwriting thread local context in ClientRouter

    In commit 4df0869, a ClientRouter was added to cache client connections
    to cell message queues. The periodic task for removing stale clients
    is called with an empty RequestContext, but this overwrites the copy
    in thread local storage unless overwrite=False is specified.

    This adds overwrite=False to the empty RequestContext to prevent it
    from overwriting the thread local context. All of the other periodic
    tasks use get_admin_context() which also creates a RequestContext with
    overwrite=False.

    Closes-Bug: #1627838

    Change-Id: I48024952865fe017e0cb786567b5b445b05e7659
    (cherry picked from commit d218f0df65729e2818a63a22f9eb476d376e168e)