when modify values of task-max-threads and task-keepalive,
operation-requires-reload message is not outputed.
these two attributes is processed in XnioWorker#setOption, and have values return,
so it should always return true.

—
[standalone@localhost:9990 /] /subsystem=io/worker=default:write-attribute(name=task-keepalive, value=10000)

{"outcome" => "success"}
[standalone@localhost:9990 /] /subsystem=io/worker=default:write-attribute(name=task-max-threads, value=10000){"outcome" => "success"}

[standalone@localhost:9990 /] /subsystem=io/worker=default:write-attribute(name=io-threads, value=10000)
{
"outcome" => "success",
"response-headers" =>

{ "operation-requires-reload" => true, "process-state" => "reload-required" }
}
[standalone@localhost:9990 /] /subsystem=io/worker=default:write-attribute(name=task-core-threads, value=10000)
{
"outcome" => "success",
"response-headers" => { "operation-requires-reload" => true, "process-state" => "reload-required" }

}
—