added clear_dir option and updated get_aux methods

csst_common/data_manager.py

@@ -94,6 +94,8 @@ class CsstMsDataManager:
         The pipeline log file name.
     log_mod : str
         The module log file name.
+    clear_dir : bool
+        If True, clear ``dm.dir_l1`` directory.
 
     Examples
     --------