remove token from notifier middleware

notifier middleware is capturing token and sending it to MQ. this
is not advisable so we should filter it out.

Change-Id: I11d9f2f23fc3b60c945c33d4d02bd7640d88a083
Closes-Bug: #1321080

pycadf/middleware/notifier.py

@@ -88,7 +88,7 @@ class RequestNotifier(base.Middleware):
         include them.
         """
         return dict((k, v) for k, v in six.iteritems(environ)
-                    if k.isupper())
+                    if k.isupper() and k != 'HTTP_X_AUTH_TOKEN')
 
     @log_and_ignore_error
     def process_request(self, request):