http.auth: Disable pylint warnings

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

lib/http/auth.py

@@ -111,6 +111,8 @@ class HttpServerRequestAuthentication(object):
     @param req: HTTP request context
 
     """
+    # Unused argument, method could be a function
+    # pylint: disable-msg=W0613,R0201
     return False
 
   def PreHandleRequest(self, req):