4453. [bug] Prefetching of DS records failed to update their

RRSIGs. [RT #42865]

(cherry picked from commit f431bf02a6)

bin/tests/system/resolver/ns6/ds.example.net.db.in

@@ -0,0 +1,12 @@
+; Copyright (C) 2010, 2014, 2016  Internet Systems Consortium, Inc. ("ISC")
+;
+; This Source Code Form is subject to the terms of the Mozilla Public
+; License, v. 2.0. If a copy of the MPL was not distributed with this
+; file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+; $Id: example.net.db.in,v 1.3 2010/11/17 23:47:08 tbox Exp $
+
+$TTL 600
+@	IN SOA	ns hostmaster 1 1800 900 604800 600
+@	IN NS	ns
+ns	IN A	10.53.0.6