chore: add variable to define image repo to nodelocal cache (#172)

Author: uchinda-sph

modules/essentials/nodelocaldns.tf

@@ -1,8 +1,9 @@
 locals {
   nodelocaldns_values = {
-    tag          = var.nodelocaldns_image_tag
-    local_dns_ip = var.nodelocaldns_localdns_ip
-    affinity     = jsonencode(var.nodelocaldns_affinity)
+    image_repository = var.nodelocaldns_image_repository
+    tag              = var.nodelocaldns_image_tag
+    local_dns_ip     = var.nodelocaldns_localdns_ip
+    affinity         = jsonencode(var.nodelocaldns_affinity)
   }
 }
 

modules/essentials/templates/nodelocaldns.yaml

@@ -1,4 +1,5 @@
 image:
+  repository: ${image_repository}
   tag: ${tag}
 config:
   localDnsIp: ${local_dns_ip}

modules/essentials/variables.tf

@@ -1616,6 +1616,12 @@ variable "nodelocaldns_namespace" {
   default     = "kube-system"
 }
 
+variable "nodelocaldns_image_repository" {
+  description = "Node Local DNS Cache image repository"
+  type        = string
+  default     = "k8s.gcr.io/dns/k8s-dns-node-cache"
+}
+
 variable "nodelocaldns_image_tag" {
   description = "Node Local DNS Cache image tag, Refer https://github.com/kubernetes/dns/releases to get tag "
   type        = string