Comment 4 for bug 1506380

Reviewed: https://review.openstack.org/235223
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=aa2eebbc2a6e658f41b7d7a06a29ca1bb0ee0a17
Submitter: Jenkins
Branch: master

commit aa2eebbc2a6e658f41b7d7a06a29ca1bb0ee0a17
Author: Igor Kalnitsky <email address hidden>
Date: Thu Oct 15 13:05:10 2015 +0300

    Mаke possible to upgrade Fuel 7.0 to Fuel 8.0

    Since we're supporting only one consequent upgrade chain, and current
    master is 8.0, let's set 7.0 as previous release and unblock 7.0 -> 8.0
    upgrade chain.

    Change-Id: I0777ac908af45268760315329d26f4c5ce8c223a
    Closes-Bug: #1506380