flake8: cmdtest - columbus

And enable the test by naming the class correctly.
flake8: cmdtest - chgrp

And enable the tests by naming the class correctly.
Enable scriptsharness tests by using pytest naming throughout.
flake8: scriptsharness - harness
flake8: scriptsharness - scripts files
flake8: scriptstest - coverage
flake8: scriptstest - make_movie
flake8: scriptstest - ping
flake8: scriptstest - rand
flake8: scriptstest - repo
flake8: tablestest - service
flake8: tablestest - backwards_compatibility
Update flake8 config to include more tests.
Enable createAllColumns_4_4_5 test and update comment.
Merge pull request #2317 from ximenesuk/flake8-sub-fixes

Flake8 fixes of integration tests