Update go dependencies

vendor/k8s.io/kubernetes/pkg/kubelet/util/BUILD

@@ -34,6 +34,8 @@ go_test(
 go_library(
     name = "go_default_library",
     srcs = [
+        "boottime_util_darwin.go",
+        "boottime_util_linux.go",
         "doc.go",
         "util.go",
         "util_unix.go",

vendor/k8s.io/kubernetes/pkg/kubelet/util/boottime_util_darwin.go

@@ -0,0 +1,44 @@
+// +build darwin
+
+/*
+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 util
+
+import (
+	"fmt"
+	"syscall"
+	"time"
+	"unsafe"
+
+	"golang.org/x/sys/unix"
+)
+
+// GetBootTime returns the time at which the machine was started, truncated to the nearest second
+func GetBootTime() (time.Time, error) {
+	output, err := unix.SysctlRaw("kern.boottime")
+	if err != nil {
+		return time.Time{}, err
+	}
+	var timeval syscall.Timeval
+	if len(output) != int(unsafe.Sizeof(timeval)) {
+		return time.Time{}, fmt.Errorf("unexpected output when calling syscall kern.bootime.  Expected len(output) to be %v, but got %v",
+			int(unsafe.Sizeof(timeval)), len(output))
+	}
+	timeval = *(*syscall.Timeval)(unsafe.Pointer(&output[0]))
+	sec, nsec := timeval.Unix()
+	return time.Unix(sec, nsec).Truncate(time.Second), nil
+}

vendor/k8s.io/kubernetes/pkg/kubelet/util/boottime_util_linux.go

@@ -0,0 +1,36 @@
+// +build freebsd linux
+
+/*
+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 util
+
+import (
+	"fmt"
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+// GetBootTime returns the time at which the machine was started, truncated to the nearest second
+func GetBootTime() (time.Time, error) {
+	currentTime := time.Now()
+	var info unix.Sysinfo_t
+	if err := unix.Sysinfo(&info); err != nil {
+		return time.Time{}, fmt.Errorf("error getting system uptime: %s", err)
+	}
+	return currentTime.Add(-time.Duration(info.Uptime) * time.Second).Truncate(time.Second), nil
+}

vendor/k8s.io/kubernetes/pkg/kubelet/util/util_unsupported.go

@@ -45,3 +45,8 @@ func UnlockPath(fileHandles []uintptr) {
 func LocalEndpoint(path, file string) string {
 	return ""
 }
+
+// GetBootTime empty implementation
+func GetBootTime() (time.Time, error) {
+	return time.Time{}, fmt.Errorf("GetBootTime is unsupported in this build")
+}

vendor/k8s.io/kubernetes/pkg/kubelet/util/util_windows.go

@@ -23,6 +23,7 @@ import (
 	"net"
 	"net/url"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/Microsoft/go-winio"
@@ -112,3 +113,15 @@ func LocalEndpoint(path, file string) string {
 	}
 	return u.String() + "//./pipe/" + file
 }
+
+var tickCount = syscall.NewLazyDLL("kernel32.dll").NewProc("GetTickCount64")
+
+// GetBootTime returns the time at which the machine was started, truncated to the nearest second
+func GetBootTime() (time.Time, error) {
+	currentTime := time.Now()
+	output, _, err := tickCount.Call()
+	if errno, ok := err.(syscall.Errno); !ok || errno != 0 {
+		return time.Time{}, err
+	}
+	return currentTime.Add(-time.Duration(output) * time.Millisecond).Truncate(time.Second), nil
+}