Add data and config for 4 node deployment

Adds the config and data for my first realish
multi-host deployments that uses the service
discovery and registration feature.

This code adds data for depoloying

- 1 db
- 1 haproxy
- 2 keystones
- 1 etcd

where all of the interconnectivity information
is figured out out runtime using the previously
implemented discovery system based on etcd.

Conflicts:
	site.pp
Merge pull request #52 from bodepd/4_role_deploy_code

Add data and config for 4 node deployment