Don't fail flake8 on lint
This MR sets the --exit-zero option for the flake8 CI job, so that it doesn't fail when lint is present - better to present it in the code quality widget and let the test suite determine fatal errors.
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This MR sets the --exit-zero option for the flake8 CI job, so that it doesn't fail when lint is present - better to present it in the code quality widget and let the test suite determine fatal errors.