[NRL-804] Add prod custom-domain-name for prod to account-wide-infra TF

Author: mattdean3-nhs

terraform/account-wide-infrastructure/prod/domain.tf

@@ -1,9 +1,8 @@
 
-/*
+
 module "dev-custom-domain-name" {
   source                = "../modules/env-custom-domain-name"
   domain_name           = var.prod_api_domain_name
   domain_zone           = aws_route53_zone.prod-ns.name
   mtls_certificate_file = "s3://${module.prod-truststore-bucket.bucket_name}/${module.prod-truststore-bucket.certificates_object_key}"
 }
-*/

terraform/account-wide-infrastructure/prod/vars.tf

@@ -4,7 +4,7 @@ variable "assume_account" {
 
 variable "assume_role" {}
 
-/*variable "prod_api_domain_name" {
+variable "prod_api_domain_name" {
   description = "The internal DNS name of the API Gateway for the prod environment"
-  default     = "api.record-locator.national.nhs.uk"
-}*/
+  default     = "prod.api.record-locator.national.nhs.uk"
+}