Add stackforge project: puppet_openstack_builder

This patch adds a new project to stackforge called
puppet_openstack_builder. This project provides a
data model for capturing reference architectures of
Openstack that can then be consumed by Puppet to
deploy a customised cloud.

Change-Id: I1359736f48543ce71c1919ea3c8f4f48ac08ef90
Merge "Add stackforge project: puppet_openstack_builder"