feat: Expose additive_vpc_scope_dns_domain (#74)

* Expose additive_vpc_scope_dns_domain

* Upgrade upstream module version

Author: ciiiii

main.tf

@@ -153,7 +153,7 @@ locals {
 module "gke" {
   count   = var.enable_private_gke ? 0 : 1
   source  = "terraform-google-modules/kubernetes-engine/google"
-  version = "33.1.0"
+  version = "35.0.1"
 
   name                              = var.cluster_name
   add_cluster_firewall_rules        = var.add_cluster_firewall_rules
@@ -194,6 +194,7 @@ module "gke" {
   cluster_dns_provider              = var.cluster_dns_provider
   cluster_dns_scope                 = var.cluster_dns_scope
   cluster_dns_domain                = var.cluster_dns_domain
+  additive_vpc_scope_dns_domain     = var.additive_vpc_scope_dns_domain
 }
 
 module "gke_private" {

variables.tf

@@ -80,6 +80,12 @@ variable "cluster_dns_domain" {
   default     = ""
 }
 
+variable "additive_vpc_scope_dns_domain" {
+  type        = string
+  description = "This will enable Cloud DNS additive VPC scope. Must provide a domain name that is unique within the VPC. For this to work cluster_dns = `CLOUD_DNS` and cluster_dns_scope = `CLUSTER_SCOPE` must both be set as well."
+  default     = ""
+}
+
 variable "cluster_http_load_balancing" {
   default     = true
   description = "Enable the HTTP load balancing addon for the cluster. Defaults to \"true\""
@@ -507,4 +513,4 @@ variable "enable_l4_ilb_subsetting" {
   type        = bool
   description = "Enable L4 ILB Subsetting on the cluster, this cannot be disabled once it has been enabled."
   default     = false
-}
+}