add k3s_registries_mysetup_cache

roles/k3s/tasks/k3s_registries_mysetup_cache.yaml

@@ -0,0 +1,10 @@
+# requires host/group vars
+# oci_cache:
+#  address: https://xxxx.xxx.xx/v2
+#  auth_username: xxxxx
+#  auth_password: Ixxxx
+
+- name:  k3s - setup cache registries
+  ansible.builtin.template:
+    src: templates/k3s-registries.mysetup.yaml.j2
+    dest: /etc/rancher/k3s/registries.yaml