218 Fixed db tests for zend-framework

Needed to add the username and password credentials
for connecting to the database.

php-zend-framework/config/autoload/benchmarks.local.php

@@ -2,7 +2,9 @@
 
 return array(
     'db' => array(
-        'driver' => 'Pdo',
-        'dsn'    => 'mysql:dbname=hello_world;host=127.0.0.1',
+        'driver'   => 'Pdo',
+        'dsn'      => 'mysql:dbname=hello_world;host=localhost;port=3306',
+        'username' => 'benchmarkdbuser',
+        'password' => 'benchmarkdbpass'
     ),
 );