Comment 4 for bug 1670419

Reviewed: https://review.openstack.org/442762
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=9b695d494444289d82a01547fd56ad8f9a50eab5
Submitter: Jenkins
Branch: stable/ocata

commit 9b695d494444289d82a01547fd56ad8f9a50eab5
Author: Matt Riedemann <email address hidden>
Date: Mon Mar 6 20:25:55 2017 -0500

    Remove unused placement_database config options

    The placement_database config options were added in Newton
    but the actual code to use the options was reverted and is
    not used. The help text actually has a typo (Ocata was 15.0.0,
    not 14.0.0) and, more importantly, the help text makes it sound
    like you should really be setting up a separate database for the
    placement service but we don't actually use these options, we use
    the api_database options for all of the placement data models.

    To avoid confusion until this is actually supported, let's just
    remove the options which should have been cleaned up as part of
    39fb302fd9c8fc57d3e4bea1c60a02ad5067163f anyway.

    Conflicts:
            nova/tests/functional/api/openstack/placement/fixtures.py

    NOTE(mriedem): The conflict is due to not having change
    a598af9de6536d8b66046fa329d9960edc706aed in stable/ocata.

    Change-Id: I31293ac4689630e4113588ab2c6373cf572b8f38
    Closes-Bug: #1670419
    (cherry picked from commit 7439e9473617a871c032107ab85b1b623369975f)