MAGETWO-70062: Product price filter in admin shows incorrect product amount

  - Add test namespace
  - Add empty line at end of file

Author: igrybkov

dev/tests/integration/testsuite/Magento/Catalog/Ui/DataProvider/ProductTest.php

@@ -3,6 +3,7 @@
  * Copyright © 2013-2017 Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+namespace Magento\Catalog\Ui\DataProvider;
 
 use Magento\Framework\Data\Collection;
 
@@ -56,4 +57,4 @@ public function sortingFieldsDataProvider()
             'price DESC' => ['price', Collection::SORT_ORDER_DESC],
         ];
     }
-}
+}