Fixed problem with options for subflowchart.

thermal_conductivity_step/thermal_conductivity.py

@@ -189,6 +189,8 @@ def create_parser(self):
         parser_name = "thermal-conductivity-step"
         parser = seamm_util.getParser()
 
+        self.subflowchart._parser = self.flowchart._parser
+
         # Remember if the parser exists ... this type of step may have been
         # found before
         parser_exists = parser.exists(parser_name)