
Most code uses convert_version_to_tuple() from oslo_utils.versionutils to determine minimum version numbers, but there were two places that used the packaging.version class instead. Change to always use the same code throughout the tree. Also added a flake8 enforcement check for it so we don't regress. TrivialFix Change-Id: Ida4dcd504562646f0a450160e57680a44c387b1d