Add destroy time flag (#580)

* Add destroy-time flag

* Update changelog

Fix cluster count

* Fix cluster count

* Fix docs

* Fix outputs

* Fix unsupported attribute on cluster_certificate_authority_data output

Co-Authored-By: Daniel Piddock <33028589+dpiddockcmp@users.noreply.github.com>

* Remove unnecessary flatten from cluster_endpoint output

Co-Authored-By: Daniel Piddock <33028589+dpiddockcmp@users.noreply.github.com>

* Improve description of var.enabled

* Fix errors manifesting when used on an existing-cluster

* Update README.md

* Renamed destroy-time flag

* Revert removal of changelog addition entry

* Update flag name in readme

* Update flag variable name

* Update cluster referencing for consistency

* Update flag name to `create_eks`

* Fixed incorrect count-based reference to aws_eks_cluster.this (there's only one)

* Replaced all incorrect aws_eks_cluster.this[count.index] references (there will be just one, so using '[0]').

* Changelog update, explicitly mentioning flag

* Fixed interpolation deprecation warning

* Fixed outputs to support conditional cluster

* Applied create_eks to aws_auth.tf

* Removed unused variable. Updated Changelog. Formatting.

* Fixed references to aws_eks_cluster.this[0] that would raise errors when setting create_eks to false whilst having launch templates or launch configurations configured.

* Readme and example updates.

* Revert "Readme and example updates."

This reverts commit 18a0746355e136010ad54858a1b518406f6a3638.

* Updated readme section of conditionally creation with provider example.

* Added conditions to node_groups.

* Fixed reversed map_roles check

* Update aws_auth.tf

Revert this due to https://github.com/terraform-aws-modules/terraform-aws-eks/pull/611

variables.tf

@@ -48,12 +48,6 @@ variable "manage_aws_auth" {
   default     = true
 }
 
-variable "write_aws_auth_config" {
-  description = "Whether to write the aws-auth configmap file."
-  type        = bool
-  default     = true
-}
-
 variable "map_accounts" {
   description = "Additional AWS account numbers to add to the aws-auth configmap. See examples/basic/variables.tf for example format."
   type        = list(string)
@@ -294,8 +288,14 @@ variable "attach_worker_cni_policy" {
   default     = true
 }
 
+variable "create_eks" {
+  description = "Controls if EKS resources should be created (it affects almost all resources)"
+  type        = bool
+  default     = true
+}
+
 variable "node_groups" {
   description = "A list of maps defining node group configurations to be defined using AWS EKS Managed Node Groups. See workers_group_defaults for valid keys."
   type        = any
   default     = []
-}
+}