Comment 5 for bug 1257725

Reviewed: https://review.openstack.org/85322
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=c4146c4016cc8d84e7c89ade0b1c1d6221d32ab6
Submitter: Jenkins
Branch: master

commit c4146c4016cc8d84e7c89ade0b1c1d6221d32ab6
Author: Akihiro Motoki <email address hidden>
Date: Fri Apr 4 20:49:14 2014 +0900

    Add tox env to build docs

    In django-based projects, we need to specify DJANGO_SETTINGS_MODULE
    when running docs build. It is required to addresses the warnings of
    docs build job in the gate.

    This commit also changes run_tests.sh --docs to use "python setup.py
    build_sphinx" to match tox docs env. This change addresses all sphinx
    build warning except keystone v3 related following warning.
    I believe it is useful.
      NoReverseMatch: u'domains' is not a registered namespace
      inside 'horizon:admin'

    Closes-Bug: #1302532
    Related-Bug: #1257725

    Change-Id: I3663b81b58be3c6cb05e4af914f768c28b21ea07