Fixed rndc key variable

bind/config/states/bind/rndc.conf

@@ -1,6 +1,6 @@
 key "rndc-key" {
         algorithm hmac-md5;
-        secret "DNS_TSIG_KEY_RNDC_SECRET";
+        secret "{{ salt['pillar.get']("model:dns:tsig:keys:rndc") }}";
 };
 
 options {