The Queue API for OpenStack Marconi.

https://issues.apache.org/jira/browse/JCLOUDS-340

To run the live tests do:

    cd rackspace-cloudqueues-us/
    mvn -Plive -Dtest.rackspace-cloudqueues-us.identity=raxUsername -Dtest.rackspace-cloudqueues-us.credential=raxApiKey clean install