Added write_aws_auth_config option (#228)

* Added update aws auth configmap when manage_aws_auth set false case
and `write_aws_auth_config` variable for not create the aws_auth files option

* Add CHANGELOG

* Changed writing config file process for Windows compatibility.

* Apply terraform-docs and terraform fmt

* Fixed zsh-specific syntax

* Fixed CHANGELOG.md

variables.tf

@@ -23,7 +23,12 @@ variable "write_kubeconfig" {
 }
 
 variable "manage_aws_auth" {
-  description = "Whether to write and apply the aws-auth configmap file."
+  description = "Whether to apply the aws-auth configmap file."
+  default     = true
+}
+
+variable "write_aws_auth_config" {
+  description = "Whether to write the aws-auth configmap file."
   default     = true
 }