Updated openstack/openstack
Project: openstack/horizon  9b074a1ab01065065280172dbb807189f6133306
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Gate on H4xx docstrings for pep8

In an effort to help horizon more friendly to OpenStack hacking
guidelines, we now gate on H40* violations.

Change-Id: Id07294543660368d2f7f5ac363710176ab23b874
Signed-off-by: Paul Belanger <paul.belanger@polybeacon.com>