This patch addresses DTACLOUD-443 - please see the JIRA ticket for more info. https://issues.apache.org/jira/browse/DTACLOUD-443
Basically this assigns the 'Realms' abstraction to Openstack 'Regions'. To try this patch you need to install the openstack gem from my fork at https://github.com/marios/ruby-openstack (I can't currently cut a new version of the gem due to the ongoing rubygems situation) thanks, marios
