Add Cinder API V1 Support

made the changes suggested by dtroyer
added client
modified setup.py entry points
updated pip required
added support for create/delete/list volume types
openstack list type
openstack create type typeName
openstack delete type typeNameOrId

Change-Id: I43655de151582e37f14dc9550151a66db7a009ab

setup.py

@@ -135,5 +135,10 @@ setuptools.setup(
             'suspend_server=openstackclient.compute.v2.server:SuspendServer',
             'unpause_server=openstackclient.compute.v2.server:UnpauseServer',
         ],
+        'openstack.volume.v1': [
+            'create_type=openstackclient.volume.v1.type:CreateType',
+            'delete_type=openstackclient.volume.v1.type:DeleteType',
+            'list_type=openstackclient.volume.v1.type:ListType',
+        ]
     }
 )