add template for directives

fuzz/corpus/hashicorp%terraforminternal%terraform%testdata%nested-resource-count-plan%main.tf

@@ -0,0 +1,11 @@
+resource "aws_instance" "foo" {
+  count = 2
+}
+
+resource "aws_instance" "bar" {
+  count = "${length(aws_instance.foo.*.id)}"
+}
+
+resource "aws_instance" "baz" {
+  count = "${length(aws_instance.bar.*.id)}"
+}