fix: Add conditional variable to allow users to opt out of tagging cluster primary security group (#2034)

variables.tf

@@ -101,6 +101,12 @@ variable "cluster_tags" {
   default     = {}
 }
 
+variable "create_cluster_primary_security_group_tags" {
+  description = "Indicates whether or not to tag the cluster's primary security group. This security group is created by the EKS service, not the module, and therefore tagging is handled after cluster creation"
+  type        = bool
+  default     = true
+}
+
 variable "cluster_timeouts" {
   description = "Create, update, and delete timeout configurations for the cluster"
   type        = map(string)