Fix to pylint problem

The problem was vtr_flow/scripts/python_libs/vtr/util.py:469:8: W0707: Consider explicitly re-raising using the 'from' keyword (raise-missing-from)

Signed-off-by: Georgiy Krylov <[email protected]>

Author: georgkrylov

vtr_flow/scripts/python_libs/vtr/util.py

@@ -466,7 +466,7 @@ def load_config_lines(filepath, allow_includes=True):
                 else:
                     config_lines.append(line)
     except IOError as error:
-        raise InspectError("Error opening config file ({})".format(error))
+        raise InspectError("Error opening config file ({})".format(error)) from error
 
     return config_lines