use matcherGroup instead of 'group'

common/python/nomadcore/parser_backend.py

@@ -246,7 +246,7 @@ class JsonParseEventsWriterBackend(object):
             'matcherName': match_telemetry['matcherName'],
             'matchFlags': match_telemetry['matchFlags'],
             'flatValues': match_telemetry['span_flat'],
-            'group': match_telemetry['group'],
+            'matcherGroup': match_telemetry['matcherGroup'],
         }
         self.__jsonOutput(res)