428 - Test coverage: GetAvailableShippingMethodsTest

1. Fix for "URL key for specified store already exists"

Author: atwixfirster

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

@@ -1,11 +1,13 @@
 <?php
 /**
- * Rollback for quote_with_payment_saved.php fixture.
+ * Rollback for quote_with_simple_product_saved_rollback.php fixture.
  *
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
 
+require 'simple_product_rollback.php';
+
 /** @var $objectManager \Magento\TestFramework\ObjectManager */
 $objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
 $quote = $objectManager->create(\Magento\Quote\Model\Quote::class);