feat: restart rke2 when registries.yaml is deployed (#465)

- ensure we restart rke2 to pickup registries.yaml changes
- add a comment to registries.yaml to force a restart

Reviewed-on: #465

modules/rke2/files/registries.yaml

@@ -1,4 +1,5 @@
 ---
+# DO NOT MODIFY - MANAGED BY PUPPET
 mirrors:
   docker.io:
     endpoint:

modules/rke2/manifests/config.pp

@@ -35,7 +35,7 @@ class rke2::config (
     mode    => '0644',
     source  => 'puppet:///modules/rke2/registries.yaml',
     require => Package["rke2-${node_type}"],
-    before  => Service["rke2-${node_type}"],
+    notify  => Service["rke2-${node_type}"],
   }
 
   # create the config file