Comment 2 for bug 1460150

Reviewed: https://review.openstack.org/186846
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=46a739531f9c2eb55c65000eca6b5737b16145ab
Submitter: Jenkins
Branch: master

commit 46a739531f9c2eb55c65000eca6b5737b16145ab
Author: David Lyle <email address hidden>
Date: Fri May 29 11:10:12 2015 -0600

    Adding download for openrc file for keystone v3

    The existing openrc file download only works for keystone v2. Regardless
    of whether v3 is enabled in Horizon.

    This adds support for both. A v2.0 and a v3 compatible openrc file
    download. A couple of different situations are covered.

    1) support for keystone v2 only: OPENSTACK_API_VERSION={'identity': 2.0}
    In this case only the v2 option is shown.

    2) Use of keystone v3 in a potentially mixed environment. Since it is
    possible to use keystone v2 and v3 in the same enviroment, having
    OPENSTACK_API_VERSION={'identity': 3} displays options for downloading
    v2 or v3 compatible openrc files.

    Rationale for making the existing methods and urls support v3+. By
    moving the v2.0 functionality to new version specific methods, they can
    be more easily excised when v2 is obsolete and we're left with the newer
    version support.

    Change-Id: I29c62dc7436cc39adc1a4af9d90ceb6767e7a177
    Closes-Bug: #1460150