Comment 4 for bug 1605846

Reviewed: https://review.openstack.org/346386
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-repo_build/commit/?id=40fec4ad3537825055127c1d06a081857d82a6ff
Submitter: Jenkins
Branch: stable/mitaka

commit 40fec4ad3537825055127c1d06a081857d82a6ff
Author: Jimmy McCrory <email address hidden>
Date: Fri Jul 22 23:44:10 2016 -0700

    Fix setting of upper_constraints fact

    The pip_constraint_update filter overrides pip versions from the second
    provided list to the first. Update the 'Set upper constraints' task so
    that upper-constraints correctly take priority over the local
    requirements packages versions.

    A test has been included to validate that the role built package
    constraints file is correctly applying the upper-constraints from the
    openstack requirements repo.

    Closes-Bug: 1605846
    Change-Id: I53864a34f3ba56a84ed658fa3952aba3c509e0b1
    (cherry picked from commit 373978f3c6c4bdf612c6bc53f8c38229dfbabd2b)