Updated openstack/openstack
Project: openstack/python-swiftclient  fd1594937d777c0047051ae470e2de5523522171

Add a tox job for generating docs

Add a tox job to make it easier for developers to generate their
own docs before submitting a patch.

Change-Id: I86dbfc64a9d174697048c254c6d3d042a62350b4