Added note agreeing with Brian Lamar that the namespace doesn't belong in wsgi

nova/wsgi.py

@@ -391,6 +391,10 @@ class Controller(object):
         return serializer.deserialize(data, content_type)
 
     def get_default_xmlns(self, req):
+        # NOTE(justinsb): This doesn't really belong here..
+        # We'll probably end up moving this into a new OpenstackApiController
+        #  class or something like that, once we know what's going to happen
+        #  with v1.1
         return 'http://docs.rackspacecloud.com/servers/api/v1.0'