add template for directives

fuzz/corpus/hashicorp%terraforminternal%terraform%testdata%plan-module-cycle%main.tf

@@ -0,0 +1,12 @@
+module "a" {
+    source = "./child"
+    in = "${aws_instance.b.id}"
+}
+
+resource "aws_instance" "b" {}
+
+resource "aws_instance" "c" {
+    some_input = "${module.a.out}"
+
+    depends_on = ["aws_instance.b"]
+}