fix: Updated code and version requirements to work with Terraform 0.15 (#1165)

examples/basic/main.tf

@@ -1,26 +1,5 @@
-terraform {
-  required_version = ">= 0.12.0"
-}
-
 provider "aws" {
-  version = ">= 2.28.1"
-  region  = var.region
-}
-
-provider "random" {
-  version = "~> 2.1"
-}
-
-provider "local" {
-  version = "~> 1.2"
-}
-
-provider "null" {
-  version = "~> 2.1"
-}
-
-provider "template" {
-  version = "~> 2.1"
+  region = var.region
 }
 
 data "aws_eks_cluster" "cluster" {
@@ -36,7 +15,6 @@ provider "kubernetes" {
   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
-  version                = "~> 1.11"
 }
 
 data "aws_availability_zones" "available" {
@@ -100,7 +78,7 @@ resource "aws_security_group" "all_worker_mgmt" {
 
 module "vpc" {
   source  = "terraform-aws-modules/vpc/aws"
-  version = "2.47.0"
+  version = "~> 2.47"
 
   name                 = "test-vpc"
   cidr                 = "10.0.0.0/16"

examples/basic/versions.tf

@@ -0,0 +1,12 @@
+terraform {
+  required_version = ">= 0.13.1"
+
+  required_providers {
+    aws        = ">= 3.22.0"
+    local      = ">= 1.4"
+    null       = ">= 2.1"
+    template   = ">= 2.1"
+    random     = ">= 2.1"
+    kubernetes = "~> 1.11"
+  }
+}