updating github.com/go-bindata/go-bindata to v3.1.1

Change-Id: I66c047a4e5e72632042f43a9f4b33ab9f5bf7ef1

pkg/kubectl/generated/bindata.go

@@ -1,4 +1,4 @@
-// Code generated by go-bindata.
+// Package generated Code generated by go-bindata. (@generated) DO NOT EDIT.
 // sources:
 // translations/OWNERS
 // translations/extract.py
@@ -26,8 +26,6 @@
 // translations/test/default/LC_MESSAGES/k8s.po
 // translations/test/en_US/LC_MESSAGES/k8s.mo
 // translations/test/en_US/LC_MESSAGES/k8s.po
-// DO NOT EDIT!
-
 package generated
 
 import (
@@ -51,21 +49,32 @@ type bindataFileInfo struct {
 	modTime time.Time
 }
 
+// Name return file name
 func (fi bindataFileInfo) Name() string {
 	return fi.name
 }
+
+// Size return file size
 func (fi bindataFileInfo) Size() int64 {
 	return fi.size
 }
+
+// Mode return file mode
 func (fi bindataFileInfo) Mode() os.FileMode {
 	return fi.mode
 }
+
+// Mode return file modify time
 func (fi bindataFileInfo) ModTime() time.Time {
 	return fi.modTime
 }
+
+// IsDir return file whether a directory
 func (fi bindataFileInfo) IsDir() bool {
-	return false
+	return fi.mode&os.ModeDir != 0
 }
+
+// Sys return file is sys mode
 func (fi bindataFileInfo) Sys() interface{} {
 	return nil
 }