Time for the weekly test cluster rebuild

A newer version of the box 'coreos-alpha' is available! You
currently have version '367.1.0'. The latest is version '379.3.0'.

(Yes, I know it'll magically upgrade itself, but I like to stay
confident I can build cleanly!)
Try applying git settings as the right user

I still can't commit right from inside vagrant, lets see if this fixes it.