Add dns-autoscaler ConfigMap template (#12789)

Author: hadi2f244

roles/kubernetes-apps/ansible/templates/dns-autoscaler-configmap.yml.j2

@@ -0,0 +1,10 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: dns-autoscaler{{ coredns_ordinal_suffix }}
+  namespace: kube-system
+  labels:
+    k8s-app: dns-autoscaler{{ coredns_ordinal_suffix }}
+    addonmanager.kubernetes.io/mode: Reconcile
+data:
+  linear: '{"preventSinglePointFailure":{{ dns_prevent_single_point_failure }},"coresPerReplica":{{ dns_cores_per_replica }},"nodesPerReplica":{{ dns_nodes_per_replica }},"min":{{ dns_min_replicas }}}'

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

@@ -2,6 +2,7 @@
 dns_autoscaler_manifests:
 - dns-autoscaler-sa.yml.j2
 - dns-autoscaler.yml.j2
+- dns-autoscaler-configmap.yml.j2
 - dns-autoscaler-clusterrole.yml.j2
 - dns-autoscaler-clusterrolebinding.yml.j2