Enables retrieving the database instance hostname
https://issues.apache.org/jira/browse/JCLOUDS-118
Allow restricting user access by IP address
https://issues.apache.org/jira/browse/JCLOUDS-116
Adds the rackspace specific providers to the list of modules
Add SYD zone/region to the rackspace-cloudtatabases-us provider
https://issues.apache.org/jira/browse/JCLOUDS-139