Any time the version.py is changed and committed the git ident
will be reset by git. After a checkout of version.py the ident
will be updated in version.py to the git commit id of version.py
Whenever we relase a new kiwi version the process is as follows:
1. run bumpversion to set the version for the release
2. run tox to create the source tarball for the release
We have to make sure tox calls a git checkout of
version.py
