update system tests so validation won't fail when using IANA key

- all tests with "recursion yes" now also specify "dnssec-validation yes",
  and all tests with "recursion no" also specify "dnssec-validation no".
  this must be maintained in all new tests, or else validation will fail
  when we use local root zones for testing.
- clean.sh has been modified where necessary to remove managed-keys.bind
  and viewname.mkeys files.

bin/tests/system/rrsetorder/clean.sh

@@ -18,3 +18,4 @@ rm -f ns?/named.run ns?/named.core
 rm -f */named.memstats
 rm -f ns*/named.lock
 rm -f ns*/named.conf
+rm -f ns*/managed-keys.bind*

bin/tests/system/rrsetorder/ns1/named.conf.in

@@ -18,6 +18,7 @@ options {
 	listen-on { 10.53.0.1; };
 	listen-on-v6 { none; };
 	recursion no;
+	dnssec-validation no;
 	notify no;
 	rrset-order {
 		name "fixed.example" order fixed;

bin/tests/system/rrsetorder/ns2/named.conf.in

@@ -18,8 +18,8 @@ options {
 	listen-on { 10.53.0.2; };
 	listen-on-v6 { none; };
 	recursion no;
+	dnssec-validation no;
 	notify yes;
-	// flush-zones-on-shutdown yes;
 	rrset-order {
 		name "fixed.example" order fixed;
 		name "random.example" order random;

bin/tests/system/rrsetorder/ns3/named.conf.in

@@ -18,6 +18,7 @@ options {
 	listen-on { 10.53.0.3; };
 	listen-on-v6 { none; };
 	recursion yes;
+	dnssec-validation yes;
 	notify yes;
 	rrset-order {
 		name "fixed.example" order fixed;

bin/tests/system/rrsetorder/ns4/named.conf.in

@@ -18,6 +18,7 @@ options {
 	listen-on { 10.53.0.4; };
 	listen-on-v6 { none; };
 	recursion yes;
+	dnssec-validation yes;
 	notify yes;
 	rrset-order {
 		class IN type A name "host.example.com" order random;