Further setup of openstack-doc-tools

Incorparting suggestions by Fungi from
http://lists.openstack.org/pipermail/openstack-infra/2013-December/000539.html:
* Add pypi-upload and tarball jobs
* Add acls for triggering the upload of a package

This patch needs a new acl openstack-doc-ptl to be created as
discussed on IRC.

Also, adds pep8 job

Change-Id: I3681caea7aad5e1fe794321744c01d6781c011a1
Merge "Further setup of openstack-doc-tools"