Fix filtering in domain mode

[domain@localhost:9990 /] /host=master/server-config=*:query(select=[name, status, auto-start], where={auto-start=>true})
{
    "outcome" => "success",
    "result" => [
        {
            "address" => [
                ("host" => "master"),
                ("server-config" => "server-one")
            ],
            "outcome" => undefined,
            "result" => {
                "name" => "server-one",
                "status" => "STARTED",
                "auto-start" => true
            }
        },
        {
            "address" => [
                ("host" => "master"),
                ("server-config" => "server-two")
            ],
            "outcome" => undefined,
            "result" => {
                "name" => "server-two",
                "status" => "STARTED",
                "auto-start" => true
            }
        },
        {
            "address" => [
                ("host" => "master"),
                ("server-config" => "server-three")
            ],
            "outcome" => undefined,
            "result" => undefined
        }
    ],
    "server-groups" => undefined
}