controller/v1beta2: Label StatefulSets

Before `apps/v1beta2`, labels were added to resources
automatically. Now we have to do it ourselves, to make sure that we can
find the Habitat from the sub-resource.

See https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.8.md#behavioral-changes

Signed-off-by: Lorenzo Manacorda <lorenzo@kinvolk.io>

pkg/controller/v1beta2/stateful_sets.go

@@ -74,6 +74,10 @@ func (hc *HabitatController) newStatefulSet(h *habv1beta1.Habitat) (*appsv1beta2
 	base := &appsv1beta2.StatefulSet{
 		ObjectMeta: metav1.ObjectMeta{
 			Name: h.Name,
+			Labels: map[string]string{
+				habv1beta1.HabitatLabel:     "true",
+				habv1beta1.HabitatNameLabel: h.Name,
+			},
 			OwnerReferences: []metav1.OwnerReference{
 				metav1.OwnerReference{
 					APIVersion: habv1beta1.SchemeGroupVersion.String(),