refactor: Refactoring to match the rest of terraform-aws-modules (#1583)

examples/managed_node_groups/main.tf

@@ -1,5 +1,5 @@
 provider "aws" {
-  region = var.region
+  region = "eu-west-1"
 }
 
 data "aws_eks_cluster" "cluster" {
@@ -12,9 +12,8 @@ data "aws_eks_cluster_auth" "cluster" {
 
 provider "kubernetes" {
   host                   = data.aws_eks_cluster.cluster.endpoint
-  cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority.0.data)
+  cluster_ca_certificate = base64decode(data.aws_eks_cluster.cluster.certificate_authority[0].data)
   token                  = data.aws_eks_cluster_auth.cluster.token
-  load_config_file       = false
 }
 
 data "aws_availability_zones" "available" {

examples/managed_node_groups/outputs.tf

@@ -18,11 +18,6 @@ output "config_map_aws_auth" {
   value       = module.eks.config_map_aws_auth
 }
 
-output "region" {
-  description = "AWS region."
-  value       = var.region
-}
-
 output "node_groups" {
   description = "Outputs from node groups"
   value       = module.eks.node_groups

examples/managed_node_groups/variables.tf

@@ -1,7 +1,3 @@
-variable "region" {
-  default = "us-west-2"
-}
-
 variable "map_accounts" {
   description = "Additional AWS account numbers to add to the aws-auth configmap."
   type        = list(string)