Destroying cluster causes some issues with removing policies (#196)

* Destroying cluster causes some issues with removing policies

use the force detach

https://www.terraform.io/docs/providers/aws/r/iam_role.html#force_detach_policies

* Destroying cluster causes some issues with removing policies

* formatting

* Destroying cluster causes some issues with removing policies

* CHANGELOG

CHANGELOG.md

@@ -11,6 +11,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 - `suspended_processes` to `worker_groups` input (by @bkmeneguello)
 - `target_group_arns` to `worker_groups` input (by @zihaoyu)
+- `force_detach_policies` to `aws_iam_role` `cluster` and `workers` (by @marky-mark)
 
 ### Changed
 

cluster.tf

@@ -50,8 +50,9 @@ resource "aws_security_group_rule" "cluster_https_worker_ingress" {
 }
 
 resource "aws_iam_role" "cluster" {
-  name_prefix        = "${var.cluster_name}"
-  assume_role_policy = "${data.aws_iam_policy_document.cluster_assume_role_policy.json}"
+  name_prefix           = "${var.cluster_name}"
+  assume_role_policy    = "${data.aws_iam_policy_document.cluster_assume_role_policy.json}"
+  force_detach_policies = true
 }
 
 resource "aws_iam_role_policy_attachment" "cluster_AmazonEKSClusterPolicy" {

workers.tf

@@ -105,8 +105,9 @@ resource "aws_security_group_rule" "workers_ingress_cluster_https" {
 }
 
 resource "aws_iam_role" "workers" {
-  name_prefix        = "${aws_eks_cluster.this.name}"
-  assume_role_policy = "${data.aws_iam_policy_document.workers_assume_role_policy.json}"
+  name_prefix           = "${aws_eks_cluster.this.name}"
+  assume_role_policy    = "${data.aws_iam_policy_document.workers_assume_role_policy.json}"
+  force_detach_policies = true
 }
 
 resource "aws_iam_instance_profile" "workers" {