update system test to add a check for UPDATE messages

bin/tests/system/dnstap/ns2/example.db.in

@@ -0,0 +1,28 @@
+; Copyright (C) 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/.
+;
+; See the COPYRIGHT file distributed with this work for additional
+; information regarding copyright ownership.
+
+$ORIGIN .
+$TTL 300	; 5 minutes
+example			IN SOA	mname1. . (
+				1          ; serial
+				20         ; refresh (20 seconds)
+				20         ; retry (20 seconds)
+				1814400    ; expire (3 weeks)
+				3600       ; minimum (1 hour)
+				)
+example.		NS	ns2.example.
+ns2.example.		A	10.53.0.2
+
+$ORIGIN example.
+a			A	10.0.0.1
+a			A	10.0.0.3
+a			A	10.0.0.5
+			MX	10 mail.example.
+
+mail			A	10.0.0.2