Convert CoreDNS Secondary to kubectl_apply_stdin

Note that we're reapplying the RBAC/Sa/Config from coredns which is not
strictly necessary, but harmless, when the secondary is enabled.

roles/kubernetes-apps/ansible/tasks/coredns.yml

@@ -1,22 +0,0 @@
----
-- name: Kubernetes Apps | Lay Down Secondary CoreDNS Template
-  template:
-    src: "{{ item.src }}.j2"
-    dest: "{{ kube_config_dir }}/{{ item.file }}"
-    mode: "0644"
-  with_items:
-    - { name: coredns, src: coredns-deployment.yml, file: coredns-deployment-secondary.yml, type: deployment }
-    - { name: coredns, src: coredns-svc.yml, file: coredns-svc-secondary.yml, type: svc }
-    - { name: dns-autoscaler, src: dns-autoscaler.yml, file: coredns-autoscaler-secondary.yml, type: deployment }
-    - { name: coredns, src: coredns-poddisruptionbudget.yml, file: coredns-poddisruptionbudget-secondary.yml, type: poddisruptionbudget, condition: coredns_pod_disruption_budget }
-  register: coredns_secondary_manifests
-  vars:
-    clusterIP: "{{ skydns_server_secondary }}"
-    coredns_ordinal_suffix: "-secondary"
-  when:
-    - dns_mode == 'coredns_dual'
-    - inventory_hostname == groups['kube_control_plane'][0]
-    - enable_dns_autoscaler or item.name != 'dns-autoscaler'
-    - item.condition | default(True)
-  tags:
-    - coredns

roles/kubernetes-apps/ansible/tasks/main.yml

@@ -32,6 +32,21 @@
     clusterIP: "{{ skydns_server }}"
   when: dns_mode in ['coredns', 'coredns_dual']
 
+- name: Kubernetes Apps | CoreDNS Secondary
+  command:
+    cmd: "{{ kubectl_apply_stdin }}"
+    stdin: "{{ lookup('template', item) }}"
+  delegate_to: "{{ groups['kube_control_plane'][0] }}"
+  run_once: true
+  loop: "{{ coredns_manifests | flatten }}"
+  tags:
+    - coredns
+  vars:
+    clusterIP: "{{ skydns_server_secondary }}"
+    coredns_ordinal_suffix: "-secondary"
+  when:
+    - dns_mode == 'coredns_dual'
+
 - name: Kubernetes Apps | Start Resources
   kube:
     name: "{{ item.item.name }}"
@@ -41,7 +56,6 @@
     filename: "{{ kube_config_dir }}/{{ item.item.file }}"
     state: "latest"
   with_items:
-    - "{{ coredns_secondary_manifests.results | default({}) }}"
     - "{{ nodelocaldns_manifests.results | default({}) }}"
     - "{{ nodelocaldns_second_manifests.results | default({}) }}"
   when: