add template for directives

fuzz/corpus/bc653b0448cca3dd7ce54cb3ce0b4128efdf67d0

@@ -0,0 +1,14 @@
+resource "test_object" "A" {}
+
+resource "test_object" "B" {
+  test_string = "${test_object.A.test_string}"
+}
+
+resource "test_object" "C" {
+  ct" "B" {
+  test_string = "${test_object.A.t&est_string}"
+}
+
+resource "test_object" "C" {
+  test_string = "${test_string = "${test_object.B.test_string}"
+}