update vendor

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/moby/term/windows/windows.go

@@ -0,0 +1,34 @@
+// +build windows
+// These files implement ANSI-aware input and output streams for use by the Docker Windows client.
+// When asked for the set of standard streams (e.g., stdin, stdout, stderr), the code will create
+// and return pseudo-streams that convert ANSI sequences to / from Windows Console API calls.
+
+package windowsconsole // import "github.com/moby/term/windows"
+
+import (
+	"io/ioutil"
+	"os"
+	"sync"
+
+	ansiterm "github.com/Azure/go-ansiterm"
+	"github.com/sirupsen/logrus"
+)
+
+var logger *logrus.Logger
+var initOnce sync.Once
+
+func initLogger() {
+	initOnce.Do(func() {
+		logFile := ioutil.Discard
+
+		if isDebugEnv := os.Getenv(ansiterm.LogEnv); isDebugEnv == "1" {
+			logFile, _ = os.Create("ansiReaderWriter.log")
+		}
+
+		logger = &logrus.Logger{
+			Out:       logFile,
+			Formatter: new(logrus.TextFormatter),
+			Level:     logrus.DebugLevel,
+		}
+	})
+}