Use splat syntax to return NG underlying resources (cloudposse#9)

* Use splat syntax to return NG underlying resources

* Update EKS cluster module's version in examples

Update from 0.13.0 to 0.16.0.

Co-authored-by: Andriy Knysh <aknysh@users.noreply.github.com>

examples/complete/main.tf

@@ -42,7 +42,7 @@ module "subnets" {
 }
 
 module "eks_cluster" {
-  source                = "git::https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=tags/0.13.0"
+  source                = "git::https://github.com/cloudposse/terraform-aws-eks-cluster.git?ref=tags/0.16.0"
   namespace             = var.namespace
   stage                 = var.stage
   name                  = var.name

outputs.tf

@@ -20,7 +20,7 @@ output "eks_node_group_arn" {
 
 output "eks_node_group_resources" {
   description = "List of objects containing information about underlying resources of the EKS Node Group"
-  value       = var.enabled ? aws_eks_node_group.default.0.resources : []
+  value       = var.enabled ? aws_eks_node_group.default.*.resources : []
 }
 
 output "eks_node_group_status" {