MAGETWO-70743: Custom options are not listed in API call

Author: viktym

dev/tests/integration/testsuite/Magento/Checkout/_files/quote_with_items_and_custom_options_saved_rollback.php

@@ -0,0 +1,20 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+$objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
+$registry = $objectManager->get(\Magento\Framework\Registry::class);
+$registry->unregister('isSecureArea');
+$registry->register('isSecureArea', true);
+$quote = $objectManager->create(\Magento\Quote\Model\Quote::class);
+$quote->load('test_order_item_with_items_and_custom_options', 'reserved_order_id');
+$quoteId = $quote->getId();
+if ($quote->getId()) {
+    $quote->delete();
+}
+
+$registry->unregister('isSecureArea');
+$registry->register('isSecureArea', false);
+
+require __DIR__ . '/../../Checkout/_files/quote_with_address_rollback.php';