Added test for RT #39197. Made the rrl test more
              tolerant of minor differences in results due to
              timing. Removed the failure override for the rrl
              test.

commit 01a15bc80ef4c20171ddfe9b5ceb2ebe008c8e0d
Author: Curtis Blackburn <ckb@isc.org>
Date:   Tue Dec 15 15:08:03 2015 -0800

    added a new nameserver to the rrl test