Comment 3 for bug 1774754

Reviewed: https://review.openstack.org/577023
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=5b72eeec54e9287f6638ab10d2b3d80ad4bfb1ee
Submitter: Zuul
Branch: master

commit 5b72eeec54e9287f6638ab10d2b3d80ad4bfb1ee
Author: chenxing <email address hidden>
Date: Thu Jun 21 10:36:27 2018 +0800

    Fix the duplicated config options of api_database and placement_database

    The "api_database" and "placement_database" config options have
    their help text duplicated in the configuration reference:

    https://docs.openstack.org/nova/latest/configuration/config.html#api-database
    https://docs.openstack.org/nova/latest/configuration/config.html#placement-database

    Co-Authored-By: Eric Fried <email address hidden>
    Change-Id: I6a20c13d570b58f2467ad0e7ba595f199e7c7c41
    Closes-Bug: #1774754