feat: add dns private zone variable

modules/composer_net/README.md

@@ -9,6 +9,7 @@ This example illustrates how to use the `composer-net` module. Please see exampl
 |------|-------------|------|---------|:--------:|
 | cloud\_composer\_network\_ipv4\_cidr\_block | The CIDR block from which IP range in tenant project will be reserved. | `string` | `null` | no |
 | composer\_env\_name | Name of Cloud Composer Environment | `string` | n/a | yes |
+| dns\_zone\_name | Composer DNS private zone name | `string` | `"composer-google-cloud-dns"` | no |
 | gke\_pods\_services\_ip\_ranges | The secondary IP ranges for the GKE Pods and Services IP ranges | `list(string)` | n/a | yes |
 | gke\_subnet\_ip\_range | The GKE subnet IP range | `list(string)` | n/a | yes |
 | master\_ipv4\_cidr | The CIDR block from which IP range in tenant project will be reserved for the master. | `string` | `null` | no |

modules/composer_net/dns.tf

@@ -17,7 +17,7 @@ composer.cloud.google.com
 ***************************************/
 
 resource "google_dns_managed_zone" "composer_cloud_zone" {
-  name        = "composer-google-cloud-dns"
+  name        = var.dns_zone_name
   project     = var.network_project_id
   dns_name    = "composer.cloud.google.com."
   description = "composer.cloud.google.com zone"

modules/composer_net/variables.tf

@@ -71,3 +71,9 @@ variable "composer_env_name" {
   description = "Name of Cloud Composer Environment"
   type        = string
 }
+
+variable "dns_zone_name" {
+  description = "Composer DNS private zone name"
+  type        = string
+  default     = "composer-google-cloud-dns"
+}