Updating templatefile references for Terraform Versions > 0.12.0

main.tf

@@ -31,8 +31,21 @@ data "template_file" "assume_role" {
 }
 
 resource "aws_iam_role" "role" {
+  count = terraform.required_version < "0.12.0" ? 1 : 0
   name = "${var.name}"
   assume_role_policy =  "${data.template_file.assume_role.rendered}"
+  tags = {
+    Terraform  = "required_version < 0.12.0"
+  }
+  lifecycle { create_before_destroy = true }
+}
+resource "aws_iam_role" "role" {
+  count = terraform.required_version > "0.12.0" ? 1 : 0
+  name = "${var.name}"
+  assume_role_policy =  templatefile("${path.module}/assume_role.json", { source_account_id = var.source_account_id })
+  tags = {
+    Terraform  = "required_version > 0.12.0"
+  }
   lifecycle { create_before_destroy = true }
 }