add template for directives

fuzz/corpus/hashicorp%terraforminternal%terraform%testdata%plan-count-splat-reference%main.tf

@@ -0,0 +1,9 @@
+resource "aws_instance" "foo" {
+    name = "foo ${count.index}"
+    count = 3
+}
+
+resource "aws_instance" "bar" {
+    foo_name = "${aws_instance.foo.*.name[count.index]}"
+    count = 3
+}