Inital commit for base heat script

This script is just a base attempt to pop a general instance.

Parameters:
    server_name
    ssh_key
    image:
        default:    Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM)
        allowed:    Debian 7 (Wheezy) (PVHVM)
                    Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM)
    flavor:
        default:      4 GB Performance
        allowed:    120 GB Performance
                     90 GB Performance
                     60 GB Performance
                     30 GB Performance
                      4 GB Performance
Initial heat script to pop an instance and install postgres 9.4

Heat script it pop a basic Rackspace Cloud instance, setup the
pgdg repo, sar, and install PostgreSQL 9.4 beta