Add a tkey system test

bin/tests/system/tkey/ns1/setup.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+RANDFILE=../random.data
+
+keyname=`$KEYGEN -a DH -b 768 -n host -r $RANDFILE server`
+keyid=`echo $keyname | perl -p -e 's/^.*\+//;'`
+rm -f named.conf
+perl -p -e "s/KEYID/$keyid/;" < named.conf.in > named.conf