MAGETWO-59764: Create serialize class in framework

Author: Joan He

dev/tests/static/testsuite/Magento/Test/Legacy/_files/security/blacklist.php

@@ -6,4 +6,5 @@
 return [
     'Test/Unit',
     'lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php',
+    'lib/internal/Magento/Framework/Serialize/Serializer/Serialize.php',
 ];