ansible: 1.2.2 (new formula)

Doing some hacky Python stuff in here so paging @samueljohn to work out how best to do so.

The main (major) problem is you need to manually set a random PYTHONPATH for this to actually run.

On a tangent, the reason I made this is because I'd like to perhaps see us use subformulae like this sometimes instead of having :python dependencies.