Renamed constants to settings which is more appropriate.

Had a little fun with figlet :-)

devstack/components/quantum.py

@@ -14,13 +14,13 @@
 #    under the License.
 
 from devstack import component as comp
-from devstack import constants
 from devstack import log as logging
+from devstack import settings
 from devstack import shell as sh
 from devstack import utils
 
 LOG = logging.getLogger("devstack.components.quantum")
-TYPE = constants.QUANTUM
+TYPE = settings.QUANTUM
 
 
 class QuantumUninstaller(comp.UninstallComponent):