feat: index policy attachments by arn if supplied as list (#8)

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Author: applike-ss

main.tf

@@ -14,9 +14,9 @@ locals {
     redeployment = timestamp()
   } : {}
 
-  task_policy_arns_map = merge({ for i, a in var.task_policy_arns : format("_#%v_", i) => a }, var.task_policy_arns_map)
+  task_policy_arns_map = merge({ for i, arn in var.task_policy_arns : arn => arn }, var.task_policy_arns_map)
 
-  task_exec_policy_arns_map = merge({ for i, a in var.task_exec_policy_arns : format("_#%v_", i) => a }, var.task_exec_policy_arns_map)
+  task_exec_policy_arns_map = merge({ for i, arn in var.task_exec_policy_arns : arn => arn }, var.task_exec_policy_arns_map)
 }
 
 module "task_label" {