Change istio LB from data_source to variable

aws_data.tf

@@ -21,16 +21,3 @@ data "aws_vpc" "dummy_vpc" {
     values = ["vpc0-dummy"]
   }
 }
-
-data "kubernetes_service" "istio_ingressgateway" {
-  depends_on = [aws_route53_zone.cluster_domain]
-  metadata {
-    name      = "istio-ingressgateway"
-    namespace = var.istio_namespace
-  }
-}
-
-data "aws_lb" "lb" {
-  depends_on = [aws_route53_zone.cluster_domain]
-  name       = split("-", data.kubernetes_service.istio_ingressgateway.status[0].load_balancer[0].ingress[0].hostname)[0]
-}

main.tf

@@ -100,6 +100,6 @@ module "cname_cluster_domain" {
   source = "git@github.e.it.census.gov:terraform-modules/aws-dns//cname"
 
   name   = format("%v.%v", "*", local.cluster_domain_name)
-  values = data.aws_lb.lb.dns_name
+  values = var.istio_ingress_lb
   zone   = aws_route53_zone.cluster_domain.zone_id
 }

variables.tf

@@ -47,10 +47,9 @@ variable "os_username" {
 # DNS variables
 ###################################################################
 
-variable "istio_namespace" {
-  description = "The namespace to install the istio components. Defaults to 'istio-system'"
+variable "istio_ingress_lb" {
+  description = "The istio ingress load balancer DNS."
   type        = string
-  default     = "istio-system"
 }
 
 variable "region_map" {