Comment 5 for bug 1775866

Reviewed: https://review.openstack.org/574833
Committed: https://git.openstack.org/cgit/openstack/oslo.db/commit/?id=df6bf3401266f42271627c1e408f87c71a06cef7
Submitter: Zuul
Branch: master

commit df6bf3401266f42271627c1e408f87c71a06cef7
Author: Mike Bayer <email address hidden>
Date: Tue Jun 12 13:26:39 2018 -0400

    Rename enginefacade.async to enginefacade.async_

    Python 3.7 now makes "async" a keyword, so deprecate the
    "async" name and replace with "async_". Additionally,
    use attribute name access only in order to implement and
    test "async" as it won't work under Python 3.7.

    Closes-Bug: #1775866
    Change-Id: Ifb2c59c2cfbd615b04570b31fcfe868f4ffea3c6