Inheritance: extends RoaAcsRequest
function scaleCluster($client, $clusterId)
{
    $params = array("password" => "Just12345", "instance_type" => "ecs.t1.small", "size" => 2, "data_disk_category" => "cloud", "data_disk_size" => 40, "ecs_image_id" => "m-23lgldfxg");
    var_dump(json_encode($params));
    $request = new Cs\ScaleClusterRequest();
    $request->setMethod("PUT");
    //$request->setClusterId("c781dc2f76bc0441a8d3c741cec070534");
    $request->putPathParameter("ClusterId", $clusterId);
    $request->setContent(json_encode($params));
    $response = $client->doAction($request);
    print_r($response);
}