Neutron Refactoring

v2_0 -> v2
No options (redesign)
More features (extension-related)
Some bugfixes
No, because of the array. Check the test JSON file - https://github.com/rackerlabs/jclouds-labs-openstack/blob/neutron-refactoring/openstack-neutron/src/test/resources/router_get_response.json