cleanup: move scheduler plugin tests to use PodWrapper

Move scheduler plugin unit tests use testing PodWrapper
where applicable to reduce duplicating pod creation
code and shorten number of lines.

Signed-off-by: Yibo Zhuang <yibzhuang@gmail.com>

pkg/scheduler/framework/plugins/helper/spread_test.go

@@ -26,6 +26,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes/fake"
+	st "k8s.io/kubernetes/pkg/scheduler/testing"
 )
 
 func TestGetPodServices(t *testing.T) {
@@ -48,16 +49,11 @@ func TestGetPodServices(t *testing.T) {
 	}
 	var pods []*v1.Pod
 	for i := 0; i < 5; i++ {
-		pod := &v1.Pod{
-			ObjectMeta: metav1.ObjectMeta{
-				Namespace: "test",
-				Name:      fmt.Sprintf("test-pod-%d", i),
-				Labels: map[string]string{
-					"app":   fmt.Sprintf("test-%d", i),
-					"label": fmt.Sprintf("label-%d", i),
-				},
-			},
-		}
+		pod := st.MakePod().Name(fmt.Sprintf("test-pod-%d", i)).
+			Namespace("test").
+			Label("app", fmt.Sprintf("test-%d", i)).
+			Label("label", fmt.Sprintf("label-%d", i)).
+			Obj()
 		pods = append(pods, pod)
 	}