MAGETWO-55785: Lightweight configurable product form load and options display

Author: ishakhsuvarov

dev/tests/functional/tests/app/Magento/ConfigurableProduct/Test/Handler/ConfigurableProduct/Curl.php

@@ -64,7 +64,7 @@ protected function prepareData(FixtureInterface $product, $prefix = null)
         $data['associated_product_ids'] = $this->prepareAssociatedProductIds($configurableAttributesData);
 
         $this->replaceMappingData($data);
-        $data['configurable-matrix-serialized'] = json_encode($data['configurable-matrix']);
+        $data['configurable-matrix-serialized'] = json_encode($data['variations-matrix']);
         $data['associated_product_ids_serialized'] = json_encode($data['associated_product_ids']);
         return $data;
     }