AN-8581 Add exception argument to handler404 function signature (#165)

* Add exception arg to handler404 function signature

* Use the underscore var for unused exception arg

* Make exception arg an unused keyword arg

analyticsdataserver/views.py

@@ -12,7 +12,7 @@ def handle_internal_server_error(_request):
     return _handle_error(500)
 
 
-def handle_missing_resource_error(_request):
+def handle_missing_resource_error(_request, exception=None):  # pylint: disable=unused-argument
     """Notify the client that the requested resource could not be found."""
     return _handle_error(404)