Feature/move to ansible

We have some problems with cookbooks and chef 12, so we're moving to ansible

When reviewing this PR, you should also download and test it. It has not yet been tested on Windows.
@mekanix one question. Would it make sense to move the two mysql tasks `change root password` and `create databases` into this file? Or maybe remove the mysql role and add the `install mysql` task to ggrc? I might not fully understand the role of roles yet so thanks for answering my questions :D