4460. [test] Add system test for dnstap using unix domain sockets.

[RT #42926]

bin/tests/system/dnstap/ns4/named.conf

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2015, 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/.
+ */
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.4;
+	notify-source 10.53.0.4;
+	transfer-source 10.53.0.4;
+	port 5300;
+	directory ".";
+	pid-file "named.pid";
+	listen-on { 10.53.0.4; };
+	listen-on-v6 { none; };
+	recursion yes;
+	notify yes;
+	dnstap-identity "ns4";
+	dnstap-version "xxx";
+	dnstap-output unix "dnstap.out";
+	dnstap { all; };
+	send-cookie no;
+	require-server-cookie no;
+};
+
+server 10.53.0.1 { tcp-only yes; };
+
+key rndc_key {
+	secret "1234abcd8765";
+	algorithm hmac-sha256;
+};
+
+controls {
+	inet 10.53.0.4 port 9953 allow { any; } keys { rndc_key; };
+};
+
+zone "." {
+	type hint;
+	file "../../common/root.hint";
+};