Cleanup redundancy

k8s_cluster = kube_control_plane + kube_node

roles/kubernetes/node/defaults/main.yml

@@ -28,7 +28,7 @@ kubelet_systemd_wants_dependencies: []
 
 # List of secure IPs for kubelet
 kube_node_addresses: >-
-  {%- for host in (groups['kube_control_plane'] + groups['kube_node'] + groups['etcd']) | unique -%}
+  {%- for host in (groups['k8s_cluster'] | union(groups['etcd'])) -%}
     {{ hostvars[host]['ip'] | default(fallback_ips[host]) }}{{ ' ' if not loop.last else '' }}
   {%- endfor -%}
 kubelet_secure_addresses: "localhost link-local {{ kube_pods_subnet }} {{ kube_node_addresses }}"