vendor: update buildkit to v0.17.0-rc2

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/containerd/continuity/fs/fstest/file_windows.go

@@ -18,9 +18,17 @@ package fstest
 
 import (
 	"errors"
+	"os"
 	"time"
 )
 
+// SetXAttr sets the xatter for the file
+func SetXAttr(name, key, value string) Applier {
+	return applyFn(func(root string) error {
+		return errors.New("Not implemented")
+	})
+}
+
 // Lchtimes changes access and mod time of file without following symlink
 func Lchtimes(name string, atime, mtime time.Time) Applier {
 	return applyFn(func(root string) error {
@@ -28,6 +36,13 @@ func Lchtimes(name string, atime, mtime time.Time) Applier {
 	})
 }
 
+// CreateDeviceFile provides creates devices Applier.
+func CreateDeviceFile(name string, mode os.FileMode, maj, min int) Applier {
+	return applyFn(func(root string) error {
+		return errors.New("Not implemented")
+	})
+}
+
 // Base applies the files required to make a valid Windows container layer
 // that the filter will mount. It is used for testing the snapshotter
 func Base() Applier {