Fix incompatibility with M1 processors getting rid of deprecated stuff

modules/iam/main.tf

 resource "aws_s3_bucket_policy" "s3_cur_output_name_policy" {
   bucket = var.s3_bucket_id
-  policy = data.template_file.s3_cur_output_name_policy.rendered
-}
-
-data "template_file" "s3_cur_output_name_policy" {
-  template = "${file("${path.module}/files/policy.json.tpl")}"
-  vars = {
+  policy = templatefile("${path.module}/files/policy.json.tpl",{
     bucket_name  = var.s3_bucket_id, 
     distribution_arn = var.distribution_arn,
     identity_arn = var.identity_arn
-    }
-}
\ No newline at end of file
+    })
+}