move methods to fastd section

site.conf

@@ -86,7 +86,6 @@
     mesh_vpn = {
         enabled = true,
         pubkey_privacy = false,
-        methods = {'null@l2tp', 'salsa2012+umac'},
         mtu = 1280,
         bandwidth_limit = {
             enabled = false,
@@ -94,6 +93,7 @@
             ingress = 4000,
         },
         fastd = {
+            methods = {'null@l2tp', 'salsa2012+umac'},
             configurable = true,
             groups = {
                 backbone = {