fix "make test"

pkg/kubelet/winstats/BUILD

@@ -2,7 +2,9 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
-    srcs = select({
+    srcs = [
+        "doc.go",
+    ] + select({
         "@io_bazel_rules_go//go/platform:windows": [
             "perfcounter_nodestats.go",
             "perfcounters.go",

pkg/kubelet/winstats/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package winstats provides a client to get node and pod level stats on windows
+package winstats // import "k8s.io/kubernetes/pkg/kubelet/winstats"

pkg/kubelet/winstats/winstats.go

@@ -144,6 +144,7 @@ func (c *StatsClient) createRootContainerInfo() (*cadvisorapiv2.ContainerInfo, e
 	return &rootInfo, nil
 }
 
+// GetDirFsInfo returns filesystem capacity and usage information.
 func (c *StatsClient) GetDirFsInfo(path string) (cadvisorapiv2.FsInfo, error) {
 	var freeBytesAvailable, totalNumberOfBytes, totalNumberOfFreeBytes int64
 	var err error