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

Change-Id: Ib78b6200df05f70fc823457e30a1fe014ddf1eb9
Reviewed-on: http://review.couchbase.org/27110
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>