Restore fails with "util has no attribute check_directory_status"

[paul-pgedge]

When attempting to perform the command pgedge backrest restore <STANZA> it fails with this error:

Traceback (most recent call last):
  File "/data/pgedge/test_cluster/node/pgedge/backrest/backrest.py", line 383, in <module>
    fire.Fire({
  File "/data/pgedge/test_cluster/node/pgedge/hub/scripts/fire/core.py", line 141, in Fire
    component_trace = _Fire(component, args, parsed_flag_args, context, name)
  File "/data/pgedge/test_cluster/node/pgedge/hub/scripts/fire/core.py", line 476, in _Fire
    component, remaining_args = _CallAndUpdateTrace(
  File "/data/pgedge/test_cluster/node/pgedge/hub/scripts/fire/core.py", line 692, in _CallAndUpdateTrace
    component = fn(*varargs, **kwargs)
  File "/data/pgedge/test_cluster/node/pgedge/backrest/backrest.py", line 121, in restore
    status = util.check_directory_status(data_dir)
AttributeError: module 'util' has no attribute 'check_directory_status'