GraphQL-174: Absolute image paths for Products

Author: Valeriy Nayda

dev/tests/api-functional/testsuite/Magento/GraphQl/Catalog/ProductViewTest.php

@@ -299,8 +299,7 @@ public function testQueryMediaGalleryEntryFieldsSimpleProduct()
             description
             gift_message_available
             id
-            image
-            image_label
+            image {url, label}
             meta_description
             meta_keyword
             meta_title