Update hcsshim and go-winio vendoring

* Update hcsshim to v0.8.14
* Update go-winio to v0.4.16

This brings in some vhd package changes from winio, and the compute storage api bindings for
the shim. This is to facilitate some coming functionality for the windows snapshotter
as well as possibly for future work down the line for the windows differ.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>

vendor/github.com/Microsoft/hcsshim/computestorage/detach.go

@@ -0,0 +1,26 @@
+package computestorage
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/Microsoft/hcsshim/internal/oc"
+	"go.opencensus.io/trace"
+)
+
+// DetachLayerStorageFilter detaches the layer storage filter on a writable container layer.
+//
+// `layerPath` is a path to a directory containing the layer to export.
+func DetachLayerStorageFilter(ctx context.Context, layerPath string) (err error) {
+	title := "hcsshim.DetachLayerStorageFilter"
+	ctx, span := trace.StartSpan(ctx, title)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("layerPath", layerPath))
+
+	err = hcsDetachLayerStorageFilter(layerPath)
+	if err != nil {
+		return fmt.Errorf("failed to detach layer storage filter: %s", err)
+	}
+	return nil
+}