Set up openstackid module

Refactor the openstack_project::openstackid_dev module out into a
top-level openstackid module in preparation for multiple servers,
set up Apache to serve content out of /srv/openstackid, add an
/etc/openstackid/database.php file with connection details injected
from hiera and keep an updated clone of openstack-infra/openstackid
in /opt/openstackid.

Change-Id: Icdde594384e3af27c8dd185a51b9e5a71619fb7b
Merge "Set up openstackid module"