Update e2e test utils with the new interfaces

test/e2e/framework/ingress_utils.go

@@ -458,10 +458,10 @@ func (cont *GCEIngressController) deleteURLMap(del bool) (msg string) {
 		}
 		return fmt.Sprintf("Failed to list url maps: %v", err)
 	}
-	if len(umList.Items) == 0 {
+	if len(umList) == 0 {
 		return msg
 	}
-	for _, um := range umList.Items {
+	for _, um := range umList {
 		if !cont.canDelete(um.Name, um.CreationTimestamp, del) {
 			continue
 		}
@@ -487,11 +487,11 @@ func (cont *GCEIngressController) deleteBackendService(del bool) (msg string) {
 		}
 		return fmt.Sprintf("Failed to list backend services: %v", err)
 	}
-	if len(beList.Items) == 0 {
+	if len(beList) == 0 {
 		Logf("No backend services found")
 		return msg
 	}
-	for _, be := range beList.Items {
+	for _, be := range beList {
 		if !cont.canDelete(be.Name, be.CreationTimestamp, del) {
 			continue
 		}
@@ -517,10 +517,10 @@ func (cont *GCEIngressController) deleteHTTPHealthCheck(del bool) (msg string) {
 		}
 		return fmt.Sprintf("Failed to list HTTP health checks: %v", err)
 	}
-	if len(hcList.Items) == 0 {
+	if len(hcList) == 0 {
 		return msg
 	}
-	for _, hc := range hcList.Items {
+	for _, hc := range hcList {
 		if !cont.canDelete(hc.Name, hc.CreationTimestamp, del) {
 			continue
 		}
@@ -546,8 +546,8 @@ func (cont *GCEIngressController) deleteSSLCertificate(del bool) (msg string) {
 		}
 		return fmt.Sprintf("Failed to list ssl certificates: %v", err)
 	}
-	if len(sslList.Items) != 0 {
-		for _, s := range sslList.Items {
+	if len(sslList) != 0 {
+		for _, s := range sslList {
 			if !cont.canDelete(s.Name, s.CreationTimestamp, del) {
 				continue
 			}
@@ -576,10 +576,10 @@ func (cont *GCEIngressController) deleteInstanceGroup(del bool) (msg string) {
 		}
 		return fmt.Sprintf("Failed to list instance groups: %v", err)
 	}
-	if len(igList.Items) == 0 {
+	if len(igList) == 0 {
 		return msg
 	}
-	for _, ig := range igList.Items {
+	for _, ig := range igList {
 		if !cont.canDelete(ig.Name, ig.CreationTimestamp, del) {
 			continue
 		}
@@ -745,7 +745,7 @@ func (cont *GCEIngressController) backendMode(nodeports []string, keyword string
 	}
 
 	matchingBackendService := 0
-	for _, bs := range beList.Items {
+	for _, bs := range beList {
 		match := false
 		for _, np := range nodeports {
 			// Warning: This assumes backend service naming convention includes nodeport in the name