Comment 6 for bug 1434103

Reviewed: https://review.openstack.org/167834
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=0d08cac3957fcc5259c2500496e067ddcf124d2d
Submitter: Jenkins
Branch: master

commit 0d08cac3957fcc5259c2500496e067ddcf124d2d
Author: Morgan Fainberg <email address hidden>
Date: Wed Mar 25 15:45:44 2015 -0700

    Remove SQL Downgrades

    SQL Schema Downgrades are no longer supported. This commit removes all
    downgrades and attempts to clearly indicate that there was an issue
    migrating the schema if a downgrade is requested.

    Closes-Bug: 1434103
    Change-Id: Ic023c90b354dd796dc78a03500f9680210b38673