T7557: Fix dns-forwarding, pending yaml re-write

Author: sarthurdev

data/templates/dns-forwarding/override.conf.j2

@@ -5,4 +5,4 @@ After=vyos-router.service
 [Service]
 RuntimeDirectoryPreserve=yes
 ExecStart=
-ExecStart=/usr/sbin/pdns_recursor --daemon=no --write-pid=no --disable-syslog --log-timestamp=no --config-dir={{ config_dir }}
+ExecStart=/usr/sbin/pdns_recursor --daemon=no --write-pid=no --disable-syslog --log-timestamp=no --config-dir={{ config_dir }} --enable-old-settings

data/templates/dns-forwarding/recursor.conf.lua.j2

@@ -2,7 +2,9 @@
 -- Do not edit, your changes will get overwritten --
 
 -- Load DNSSEC root keys from dns-root-data package.
-dofile("/usr/share/pdns-recursor/lua-config/rootkeys.lua")
+-- dofile("/usr/share/pdns-recursor/lua-config/rootkeys.lua")
+-- lua-config no longer present, copying line from file
+readTrustAnchorsFromFile("/usr/share/dns/root.key")
 
 -- Load lua from vyos-hostsd --
 dofile("{{ config_dir }}/recursor.vyos-hostsd.conf.lua")