Merge pull request #4399 from derekwaynecarr/update_cache_func

If an object has no namespace, do not add a leading slash

pkg/client/cache/store.go

@@ -57,8 +57,11 @@ func MetaNamespaceKeyFunc(obj interface{}) (string, error) {
 	if err != nil {
 		return "", fmt.Errorf("object has no meta: %v", err)
 	}
+	if len(meta.Namespace()) > 0 {
 		return meta.Namespace() + "/" + meta.Name(), nil
 	}
+	return meta.Name(), nil
+}
 
 type cache struct {
 	lock  sync.RWMutex