Updated openstack/openstack
Project: openstack/django_openstack_auth  483183c5a4f189a0211a66374f304991e2192465
null
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 failure of
docs build job in the gate.

Change-Id: I33a867bc00c70f333c4dc62add411f833e418424
Closes-Bug: #1302532