Fix firewall rule ID generation

All rules in a firewall were getting the same rule ID due to an
order of operations bug.
Merge pull request #37 from labisso/firewall-rules

Fix firewall rule ID generation
Merge branch '2014.03' of https://github.com/greese/dasein-cloud-google into 2014.03
Region fix for listVMs
Merge branch '2014.03' into develop