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This is the first in a series of commits to add support for codespell. This is continuning the process completed in ironic-python-agent. Future Commits will add a Tox Target, CI support and potentially a git-blame-ignore-revs file if their are lots of spelling mistakes that could clutter git blame. Change-Id: Id328ff64c352e85b58181e9d9e35973a8706ab7a