Re-think integration vendoring

- remove docker/docker from  Traefik vendor (unused)
- use `ignore` for all Traefik vendor in integration glide.
- defined only integration specific version of the dependencies.

integration/vendor/github.com/Microsoft/go-winio/backup.go

@@ -26,18 +26,10 @@ const (
 	BackupReparseData
 	BackupSparseBlock
 	BackupTxfsData
-)
 
-const (
 	StreamSparseAttributes = uint32(8)
 )
 
-const (
-	WRITE_DAC              = 0x40000
-	WRITE_OWNER            = 0x80000
-	ACCESS_SYSTEM_SECURITY = 0x1000000
-)
-
 // BackupHeader represents a backup stream of a file.
 type BackupHeader struct {
 	Id         uint32 // The backup stream ID
@@ -247,20 +239,3 @@ func (w *BackupFileWriter) Close() error {
 	}
 	return nil
 }
-
-// OpenForBackup opens a file or directory, potentially skipping access checks if the backup
-// or restore privileges have been acquired.
-//
-// If the file opened was a directory, it cannot be used with Readdir().
-func OpenForBackup(path string, access uint32, share uint32, createmode uint32) (*os.File, error) {
-	winPath, err := syscall.UTF16FromString(path)
-	if err != nil {
-		return nil, err
-	}
-	h, err := syscall.CreateFile(&winPath[0], access, share, nil, createmode, syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OPEN_REPARSE_POINT, 0)
-	if err != nil {
-		err = &os.PathError{Op: "open", Path: path, Err: err}
-		return nil, err
-	}
-	return os.NewFile(uintptr(h), path), nil
-}