MAGETWO-58729: [Generator] Add images to performance profile generator

Author: AVoskoboinikov

setup/src/Magento/Setup/Test/Unit/Fixtures/AttributeSet/SwatchesGeneratorTest.php

@@ -90,7 +90,7 @@ function ($values, $index) {
 
         $attributeImageType = $attributeColorType;
         $attributeImageType['swatchvisual']['value'] = array_map(
-            function($item) {
+            function ($item) {
                 return ltrim($item, '/');
             },
             $this->imagePathFixture