More e2e damage from renaming "net" to "POD"

This stops the bleeding.  Will followup with a constant.

pkg/master/pod_cache.go

@@ -169,7 +169,7 @@ func (p *PodCache) computePodStatus(pod *api.Pod) (api.PodStatus, error) {
 	} else {
 		newStatus.Info = result.Status.Info
 		newStatus.Phase = getPhase(&pod.Spec, newStatus.Info)
-		if netContainerInfo, ok := newStatus.Info["net"]; ok {
+		if netContainerInfo, ok := newStatus.Info["POD"]; ok {
 			if netContainerInfo.PodIP != "" {
 				newStatus.PodIP = netContainerInfo.PodIP
 			}

pkg/master/pod_cache_test.go

@@ -339,7 +339,7 @@ func TestFillPodStatus(t *testing.T) {
 			HostIP: "ip of machine",
 			PodIP:  expectedIP,
 			Info: api.PodInfo{
-				"net": {
+				"POD": {
 					State: api.ContainerState{
 						Running: &api.ContainerStateRunning{
 							StartedAt: util.NewTime(expectedTime),
@@ -374,7 +374,7 @@ func TestFillPodInfoNoData(t *testing.T) {
 			Host:   "machine",
 			HostIP: "ip of machine",
 			Info: api.PodInfo{
-				"net": {},
+				"POD": {},
 			},
 		},
 		nodes: []api.Node{*makeHealthyNode("machine")},