Updated openstack/openstack
Project: openstack-dev/pbr  7cb1dbfb8d7bfcea69dd73c2539b8186b35e467a

Allow for inclusion of authors and changelog when building docs

When git is available and changelog and author building has not
been turned off try to build these two files so that they can be
included in any subsequent documentation.

Change-Id: I2fc7ade645e3ff1a67e30bd4d35676b5e10916af