add template for directives

fuzz/corpus/hashicorp%terraforminternal%terraform%testdata%input-submodule-count%mod%main.tf

@@ -0,0 +1,11 @@
+variable "instance_count" {
+}
+
+resource "aws_instance" "foo" {
+  count = "${var.instance_count}"
+}
+
+module "submod" {
+  source = "./submod"
+  list   = ["${aws_instance.foo.*.id}"]
+}