[VOL-5291] - Add tox debugging for gerrit:35128

Makefile
--------
  o Invoke tox -vvv to run at verbosity level (4=DEBUG).

setup.py
requirements.txt
----------------
  o Add a proper copyright notice for lint license checking.

tox.ini
-------
  o Added a see-also section with documentation urls.

.pre-commit-config.yaml
-----------------------
  o Add pre-commit tool config file.
  o Cleanup some minor linting complaints.

Change-Id: I60c6ba1e68f3f45502fe1629642b3afbc54737a0
5 files changed