How to configure the Connection for redis cluster?@samdark@hofrob

for example:
'redis' => [
            'class' => 'yii\redis\Connection',
            'servers'=>[
                ['hostname' => '127.0.0.1','port'=> 6379],
                ['hostname' => '127.0.0.1','port'=> 6380],
                ['hostname' => '127.0.0.1','port'=> 6381],
            ]
        ],