Refactor qos package

Signed-off-by: Buddha Prakash <buddhap@google.com>

pkg/kubelet/qos/policy.go

@@ -18,7 +18,6 @@ package qos
 
 import (
 	"k8s.io/kubernetes/pkg/api"
-	"k8s.io/kubernetes/pkg/kubelet/qos/util"
 )
 
 const (
@@ -36,11 +35,11 @@ const (
 // and 1000. Containers with higher OOM scores are killed if the system runs out of memory.
 // See https://lwn.net/Articles/391222/ for more information.
 func GetContainerOOMScoreAdjust(pod *api.Pod, container *api.Container, memoryCapacity int64) int {
-	switch util.GetPodQos(pod) {
-	case util.Guaranteed:
+	switch GetPodQos(pod) {
+	case Guaranteed:
 		// Guaranteed containers should be the last to get killed.
 		return guaranteedOOMScoreAdj
-	case util.BestEffort:
+	case BestEffort:
 		return besteffortOOMScoreAdj
 	}