Reduce volume of logs generated at v(3)

Node controller is generating a huge amount of logging at v(3) that is
more appropriate for v(5). Split the log into two levels and ensure it
also ends up on one line (so grep works).

The pod manager generates a v(4) pod output on sync that always contains
a newline - since the size of the pod is so excessive in output, kick it
to v(5) for deep debugging (we're pretty happy with this loop).

pkg/controller/node/nodecontroller.go

@@ -645,7 +645,11 @@ func (nc *NodeController) tryUpdateNodeStatus(node *api.Node) (time.Duration, ap
 		} else {
 			transitionTime = savedNodeStatus.readyTransitionTimestamp
 		}
-		glog.V(3).Infof("Nodes ReadyCondition updated. Updating timestamp: %+v\n vs %+v.", savedNodeStatus.status, node.Status)
+		if glog.V(5) {
+			glog.Infof("Node %s ReadyCondition updated. Updating timestamp: %+v vs %+v.", node.Name, savedNodeStatus.status, node.Status)
+		} else {
+			glog.V(3).Infof("Node %s ReadyCondition updated. Updating timestamp.", node.Name)
+		}
 		savedNodeStatus = nodeStatusData{
 			status:                   node.Status,
 			probeTimestamp:           nc.now(),

pkg/kubelet/dockertools/manager.go

@@ -1607,7 +1607,7 @@ func (dm *DockerManager) computePodContainerChanges(pod *api.Pod, podStatus *kub
 	defer func() {
 		metrics.ContainerManagerLatency.WithLabelValues("computePodContainerChanges").Observe(metrics.SinceInMicroseconds(start))
 	}()
-	glog.V(4).Infof("Syncing Pod %q: %+v", format.Pod(pod), pod)
+	glog.V(5).Infof("Syncing Pod %q: %+v", format.Pod(pod), pod)
 
 	containersToStart := make(map[int]string)
 	containersToKeep := make(map[kubecontainer.DockerID]int)