feat: make rke2 registries.yaml conditional on manage_registries (#472)

Add/Remove the registries.yaml file based on the manage_registries
boolean. We are leaving it on default=false now as the artifactapi
server was broken.

---------

Co-authored-by: Ben Vincent <ben@unkin.net>
Reviewed-on: #472

modules/rke2/manifests/init.pp

@@ -12,6 +12,7 @@ class rke2 (
   Hash                    $helm_repos = $rke2::params::helm_repos,
   Array[String[1]]        $extra_config_files = $rke2::params::extra_config_files,
   Stdlib::HTTPUrl         $container_archive_source = $rke2::params::container_archive_source,
+  Boolean                 $manage_registries = $rke2::params::manage_registries,
 ) inherits rke2::params {
 
   include rke2::install