When you have running tox -elint, it's will generate logs dir in the
project, It's useful to add logs in .gitignore to avoid logs to be
commited. And, when you have using pycharm to open this project, it's
will generate a hide dir .idea, so it's also needed to be ignore
Change-Id: Ia86897b5971703cb83c8b32d502ce955b8419ac0