Comment 6 for bug 1599855

Reviewed: https://review.openstack.org/340149
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=eb2fd292b877f578abd4020ee2efb6332090f653
Submitter: Jenkins
Branch: stable/liberty

commit eb2fd292b877f578abd4020ee2efb6332090f653
Author: Andreas Jaeger <email address hidden>
Date: Fri Feb 26 19:44:07 2016 +0100

    always use pip constraints

    This flips the tox.ini to always use constraints installation for
    all targets. It drops the extra -constraints targets in the process.
    This makes it so there is no developer change required to operate in our
    new world order.

    Change-Id: I2b56835edb2d75b7c871aae030e909578dbb9
    Depends-On: I0b582ac2c7c227faf72bf701dfa88e83a8ba9ee6
    Depends-On: Iecd35d6bc3b1e9e0ed31b48a34e4149d34d55ac2
    Closes-Bug: #1599855
    (cherry picked from commit 379f272924f1e3946f8eb08eb9690e42d09b0a29)