Convert RKE2 registries to hiera-driven template, disable default endpoints

- Replace static registries.yaml with EPP template driven by rke2::registries hash
- Add disable-default-registry-endpoint: true to all mirrors
- Add docker.litellm.ai and public.ecr.aws registries
- Registry configuration now managed via hiera data in roles/infra/k8s.yaml

modules/rke2/templates/registries.yaml.epp

@@ -0,0 +1,20 @@
+<%- | Hash $registries | -%>
+---
+# DO NOT MODIFY - MANAGED BY PUPPET
+mirrors:
+<%- $registries.each |$registry, $config| { -%>
+  <%= $registry %>:
+    endpoint:
+<%- $config['endpoint'].each |$ep| { -%>
+      - "<%= $ep %>"
+<%- } -%>
+<%- if $config['rewrite'] { -%>
+    rewrite:
+<%- $config['rewrite'].each |$pattern, $replacement| { -%>
+      "<%= $pattern %>": "<%= $replacement %>"
+<%- } -%>
+<%- } -%>
+<%- if $config['disable-default-registry-endpoint'] { -%>
+    disable-default-registry-endpoint: true
+<%- } -%>
+<%- } -%>