Updated openstack/openstack
Project: openstack/python-novaclient  9b20773b66fe089953d7a6f69b6699710c77127a
null
Enable pep8 check for config.py in doc

Directory doc is excluded from pep8 check in tox.ini, since we
modified file doc/source/config.py, we should enable the check.

Change-Id: I057f1e6cb1c5f9a6a07043056078e4475f66f288