Fix selinux issue with following node e2e test:

[Fail] [k8s.io] Kubelet metrics api when querying /stats/summary [It] it should report resource usage through the stats api
/root/upstream-code/gocode/src/k8s.io/kubernetes/test/e2e_node/kubelet_test.go:158

test/e2e_node/kubelet_test.go

@@ -178,6 +178,11 @@ func createSummaryTestPods(f *framework.Framework, podNamePrefix string, count i
 						},
 					},
 				},
+				SecurityContext: &api.PodSecurityContext{
+					SELinuxOptions: &api.SELinuxOptions{
+						Level: "s0",
+					},
+				},
 				Volumes: []api.Volume{
 					// TODO: Test secret volumes
 					// TODO: Test hostpath volumes