fix: More compatibility fixes for Terraform v0.13 and aws v3 (#976)

Additional support for Terraform v0.13 and aws v3!
- The update to the vpc module in examples was, strictly speaking, unnecessary but it adds the terraform block with supported versions.
- Update for iam module in the example was very necessary to support new versions
- Workaround for "Provider produced inconsistent final plan" when creating ASGs at the same time as the cluster. See  https://github.com/terraform-providers/terraform-provider-aws/issues/14085 for full details.
- Blacklist 0.13.0 as it was too strict when migrating from aws v2 to v3 about dropped attributes.

examples/basic/main.tf

@@ -100,7 +100,7 @@ resource "aws_security_group" "all_worker_mgmt" {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "2.6.0"
+  version = "2.47.0"
 
   name                 = "test-vpc"
   cidr                 = "10.0.0.0/16"

examples/irsa/irsa.tf

@@ -1,6 +1,6 @@
 module "iam_assumable_role_admin" {
   source                        = "terraform-aws-modules/iam/aws//modules/iam-assumable-role-with-oidc"
-  version                       = "~> v2.6.0"
+  version                       = "2.14.0"
   create_role                   = true
   role_name                     = "cluster-autoscaler"
   provider_url                  = replace(module.eks.cluster_oidc_issuer_url, "https://", "")

examples/irsa/main.tf

@@ -41,7 +41,7 @@ data "aws_caller_identity" "current" {}
 
 module "vpc" {
   source               = "terraform-aws-modules/vpc/aws"
-  version              = "2.6.0"
+  version              = "2.47.0"
   name                 = "test-vpc"
   cidr                 = "10.0.0.0/16"
   azs                  = data.aws_availability_zones.available.names

examples/launch_templates/main.tf

@@ -53,7 +53,7 @@ resource "random_string" "suffix" {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "2.6.0"
+  version = "2.47.0"
 
   name                 = "test-vpc-lt"
   cidr                 = "10.0.0.0/16"

examples/managed_node_groups/main.tf

@@ -53,7 +53,7 @@ resource "random_string" "suffix" {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "~> 2.6"
+  version = "2.47.0"
 
   name                 = "test-vpc"
   cidr                 = "172.16.0.0/16"

examples/secrets_encryption/main.tf

@@ -57,7 +57,7 @@ resource "aws_kms_key" "eks" {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "2.6.0"
+  version = "2.47.0"
 
   name                 = "test-vpc"
   cidr                 = "10.0.0.0/16"

examples/spot_instances/main.tf

@@ -53,7 +53,7 @@ resource "random_string" "suffix" {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "2.6.0"
+  version = "2.47.0"
 
   name                 = "test-vpc-spot"
   cidr                 = "10.0.0.0/16"