GitLab

* Fixed custom module importing on Windows

Windows use back slash and `os.path.join()` follows that convention.

* Apply suggestions from code review
Co-authored-by: Lucain <lucainp@gmail.com>

* Update pipeline_utils.py

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Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>
Co-authored-by: Lucain <lucainp@gmail.com>