Automatic merge from submit-queue

kubeadm: If `--config` is set, don't allow any other option as it won't have effect

If use config in kubeadm init, cann't get other values from other arguments. 
`kubeadm init --config=../kubeadm.config --token 447ad3.96cda76e3206fca0 --apiserver-bind-port 6445`

So I think we need to allow get values from command and is prior than cofig file.