Don't check for duplicate name if name not specified
Don't check for duplicate name if name not specified

Change-Id: Id36e1c4a9c9d31be32bc76dded794a5cf0b56212

sapcc/monasca-api,openstack/monasca-api,openstack/monasca-api,stackforge/monasca-api,stackforge/monasca-api,openstack/monasca-api,sapcc/monasca-api,stackforge/monasca-api,sapcc/monasca-api,stackforge/monasca-api