[master] address rpz bugs

3877.	[bug]		Inserting and deleting parent and child nodes
			in response policy zones could trigger an assertion
			failure. [RT #36272]

bin/tests/system/rpz/ns5/empty.db.in

@@ -0,0 +1,24 @@
+; Copyright (C) 2014  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+$TTL	120
+@	SOA	.  hostmaster.ns.example.tld5. ( 1 3600 1200 604800 60 )
+	NS	ns
+	NS	ns1
+	NS	ns2
+	NS	ns3
+ns	A	10.53.0.5
+ns1	A	10.53.0.5
+ns2	A	10.53.0.6
+ns3	A	10.53.0.6