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This patch bumps the hacking, bandit and flake8 requirements to match suit with similar work (ex [1]). It also updates the code to fix a few new pep8 errors as well as adds a local tox target for requirements-check-dev. [1] https://review.opendev.org/#/c/658245/ Change-Id: I6caeb52dc1a5842338ec989a742ae5989608e0da