Add testdata for a writeable config file

Author: bbasata

helper/resource/importstate/testdata/writeable-config-file/examplecloud_container_import_with_identity.tf

@@ -0,0 +1,14 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+resource "examplecloud_container" "test" {
+  name     = "somevalue"
+  location = "westeurope"
+}
+
+import {
+  to = examplecloud_container.test
+  identity = {
+    id = "examplecloud_container.test"
+  }
+}