add client request timeout and dialer deadline

storage/kubernetes/client.go

@@ -333,7 +333,10 @@ func newClient(cluster k8sapi.Cluster, user k8sapi.AuthInfo, namespace string, l
 
 	logger.Infof("kubernetes client apiVersion = %s", apiVersion)
 	return &client{
-		client:     &http.Client{Transport: t},
+		client: &http.Client{
+			Transport: t,
+			Timeout:   15 * time.Second,
+		},
 		baseURL:    cluster.Server,
 		hash:       func() hash.Hash { return fnv.New64() },
 		namespace:  namespace,