Updated openstack/openstack
Project: openstack/horizon  bea60a44e4f67062617d5b9bf4716940f22c1581

Bringing HACKING.rst in correspondence with tox.ini

Since there is a couple of new import exceptions in tox.ini,
we should add corresponding lines to HACKING.rst list.

Change-Id: Ia45eb9a5dcdc4db5205f235c85cfeab80c62d786