feat(helm):use a variable for labels to get tiller pod

pkg/helm/portforwarder/portforwarder.go

@@ -29,6 +29,10 @@ import (
 	"k8s.io/helm/pkg/kube"
 )
 
+var (
+	tillerPodLabels labels.Set = labels.Set{"app": "helm", "name": "tiller"}
+)
+
 // New creates a new and initialized tunnel.
 func New(namespace string, client kubernetes.Interface, config *rest.Config) (*kube.Tunnel, error) {
 	podName, err := getTillerPodName(client.CoreV1(), namespace)
@@ -41,8 +45,7 @@ func New(namespace string, client kubernetes.Interface, config *rest.Config) (*k
 }
 
 func getTillerPodName(client corev1.PodsGetter, namespace string) (string, error) {
-	// TODO use a const for labels
-	selector := labels.Set{"app": "helm", "name": "tiller"}.AsSelector()
+	selector := tillerPodLabels.AsSelector()
 	pod, err := getFirstRunningPod(client, namespace, selector)
 	if err != nil {
 		return "", err

pkg/helm/portforwarder/portforwarder_test.go

@@ -29,7 +29,7 @@ func mockTillerPod() v1.Pod {
 		ObjectMeta: metav1.ObjectMeta{
 			Name:      "orca",
 			Namespace: v1.NamespaceDefault,
-			Labels:    map[string]string{"app": "helm", "name": "tiller"},
+			Labels:    tillerPodLabels,
 		},
 		Status: v1.PodStatus{
 			Phase: v1.PodRunning,