Add in the ability to unset override host

fastly.tf

@@ -2,6 +2,7 @@ module "fastly" {
   source = "./modules/fastly-frontend"
 
   domain_name                 = var.fastly_domain
+  additional_domain_names     = var.additional_fastly_domains
   bare_redirect_domain_name   = var.bare_redirect_domain_name
   backend_address             = module.dns_record.fqdn
   env                         = var.env
@@ -25,5 +26,6 @@ module "fastly" {
   shield                      = var.shield
   surrogate_key_name          = var.surrogate_key_name
   run_data                    = var.run_data
+  override_host               = var.override_host
 }
 

modules/fastly-frontend/main.tf

@@ -15,6 +15,13 @@ resource "fastly_service_v1" "fastly" {
     name = local.full_domain_name
   }
 
+  dynamic "domain" {
+     for_each = var.additional_domain_names
+     content {
+       name = var.env == "live" ? domain.value : "${var.env}-${domain.value}"
+     }
+   }
+
   default_host = var.override_host == "true" ? local.full_domain_name : ""
   default_ttl  = 60
 

modules/fastly-frontend/variables.tf

@@ -4,6 +4,12 @@ variable "domain_name" {
   description = "Domain name to use for this Fastly configuration"
 }
 
+variable "additional_domain_names" {
+  type        = list(string)
+  description = "List of additional domain names for fastly"
+  default     = []
+}
+
 variable "bare_redirect_domain_name" {
   type        = string
   default     = ""

variables.tf

@@ -4,6 +4,11 @@ variable "fastly_domain" {
   type        = string
 }
 
+variable "additional_fastly_domains" {
+  default = []
+  type = list(string)
+}
+
 variable "env" {
   description = "Environment name"
 }
@@ -255,8 +260,12 @@ variable "run_data" {
   default     = true
 }
 
-
 variable "sticky" {
   description = "turn on sticky"
   default = []
 }
+
+variable "override_host" {
+  description = "Used to enable or disable setting of default_host (Override host in UI) value"
+  default     = "true"
+}