cluster.py: use default values for thresholds

mossutils/cluster.py

@@ -200,11 +200,13 @@ def configure_cli_parser(parser):
   parser.add_argument(
     "-tp", "--threshold-percentage",
     type=int,
+    default=DEFAULT_THRESHOLD_PERCENTAGE,
     help="Threshold for similarity in percentage; matches below will be excluded (default: {})".format(DEFAULT_THRESHOLD_PERCENTAGE))
 
   parser.add_argument(
     "-tl", "--threshold-lines",
     type=int,
+    default=DEFAULT_THRESHOLD_LINES,
     help="Threshold for similarity in lines of code; matches below will be excluded (default: {})".format(DEFAULT_THRESHOLD_LINES))
 
   logutils.add_loglevel_argument(parser)