ZF-12060: Add time_zone setting for Zend_Db_Abstract
Similar with adding charset option I think worth to add as well an option to set the db timezone.
Currently this option is possible to be set with something like this:
'driver_options'=>array('MYSQLI_INIT_COMMAND' => "set time_zone = '+00:00'")
But this is MYSQLI only setting so I suggest to add a way to set this easily no matter what adapter is in use.