dedup in updatePodStatus (#830)

Co-authored-by: Brian Goff <cpuguy83@gmail.com>

node/pod.go

@@ -209,6 +209,9 @@ func (pc *PodController) updatePodStatus(ctx context.Context, podFromKubernetes
 	kPod.Lock()
 	podFromProvider := kPod.lastPodStatusReceivedFromProvider.DeepCopy()
 	kPod.Unlock()
+	if cmp.Equal(podFromKubernetes.Status, podFromProvider.Status) {
+		return nil
+	}
 	// We need to do this because the other parts of the pod can be updated elsewhere. Since we're only updating
 	// the pod status, and we should be the sole writers of the pod status, we can blind overwrite it. Therefore
 	// we need to copy the pod and set ResourceVersion to 0.