CBQE-1407: py-autofailover.conf with GROUP=WINDOWS

Change-Id: I8d03a1872aab0272410a950516725a0e2003d0bb
Reviewed-on: http://review.couchbase.org/27101
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>