// cannot. "pod" is new pod, while "pods" are all admitted pods
// The function returns a boolean value indicating whether the pod
// can be admitted, a brief single-word reason and a message explaining why
// the pod cannot be admitted.
func (kl *Kubelet) canAdmitPod(pods []*v1.Pod, pod *v1.Pod) (bool, string, string) {
	// the kubelet will invoke each pod admit handler in sequence