python: Changed chart tests to run only in the showcase folder by def…

…ault.

python/inet/test/chart.py

@@ -105,7 +105,7 @@ def run_protected(self, **kwargs):
         multiple_simulation_task_results = self.multiple_simulation_tasks.run_protected(**kwargs)
         return super().run_protected(**kwargs)
 
-def get_chart_test_tasks(simulation_project=None, run_simulations=True, filter=None, working_directory_filter=None, chart_filter=None, exclude_chart_filter=None, **kwargs):
+def get_chart_test_tasks(simulation_project=None, run_simulations=True, filter="showcases", working_directory_filter=None, chart_filter=None, exclude_chart_filter=None, **kwargs):
     """
     Returns multiple chart test tasks matching the provided filter criteria. The returned tasks can be run by
     calling the :py:meth:`run <inet.common.task.MultipleTasks.run>` method.