Wrong import order for sys

Former-commit-id: 83cfb7f8

steps/find_skymodel_cal.cwl

@@ -22,10 +22,11 @@ label: find_skymodel_cal.py
 arguments:
   - '-c'
   - |
+    import sys
+
     from unittest.mock import MagicMock
     sys.modules['lofarpipe.support.data_map'] = MagicMock()
     
-    import sys
 
     from find_skymodel_cal import main as find_skymodel
     import json