MAGETWO-70498: [Magento Cloud] - /rest/default/V1/order/<order id>/ship and configurable products - for 2.1

Author: RuslanKostiv1

app/code/Magento/Shipping/Controller/Adminhtml/Order/ShipmentLoader.php

@@ -12,6 +12,7 @@
 use Magento\Sales\Api\Data\ShipmentItemCreationInterfaceFactory;
 use Magento\Sales\Model\Order\ShipmentDocumentFactory;
 use Magento\Sales\Api\Data\ShipmentItemCreationInterface;
+use Magento\Framework\App\ObjectManager;
 
 /**
  * Class ShipmentLoader