add template nsd.conf (with examples)

src/etc/nsd.conf

@@ -0,0 +1,24 @@
+# $OpenBSD: nsd.conf,v 1.3 2010/01/17 19:45:34 jakob Exp $
+
+server:
+	hide-version: yes
+
+## tsig key example
+#key:
+#	name: "key1"
+#	algorithm: hmac-sha256
+#	secret: "m83H2x8R0zbDf3yRKhrqgw=="
+
+## master zone example
+#zone:
+#	name: "example.com"
+#	zonefile: "example.com"
+#	notify: 192.0.2.1 NOKEY
+#	provide-xfr: 192.0.2.1 NOKEY
+
+## slave zone example
+#zone:
+#	name: "example.net"
+#	zonefile: "example.net"
+#	allow-notify: 192.0.2.2 key1
+#	request-xfr: 192.0.2.2 key1