Updated openstack/openstack
Project: openstack/python-ceilometerclient  27a810146b2e5503a7b40e1ef2342005bdfd9bd2

Workflow documentation is now in infra-manual

Replace URLs for workflow documentation to appropriate parts of the
OpenStack Project Infrastructure Manual.

Change-Id: I847846e69a72c9c6ff2a6bf7139ba31d0a77d606