Fix constructor arguments

Author: XWB

src/Test/EventDispatchingHttpCacheTestCase.php

@@ -62,6 +62,8 @@ protected function getHttpCachePartialMock(array $mockedMethods = null)
             'allow_revalidate' => false,
             'stale_while_revalidate' => 2,
             'stale_if_error' => 60,
+            'trace_level' => 'full',
+            'trace_header' => 'FOSHttpCache',
         ];
 
         $refHttpCache = new \ReflectionClass(HttpCache::class);