Vendor after merging c/image#536

... which adds blob info caching

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

vendor/github.com/containers/storage/pkg/chrootarchive/archive.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/containers/storage/pkg/archive"
 	"github.com/containers/storage/pkg/idtools"
+	rsystem "github.com/opencontainers/runc/libcontainer/system"
 )
 
 // NewArchiver returns a new Archiver which uses chrootarchive.Untar
@@ -52,6 +53,7 @@ func untarHandler(tarArchive io.Reader, dest string, options *archive.TarOptions
 	}
 	if options == nil {
 		options = &archive.TarOptions{}
+		options.InUserNS = rsystem.RunningInUserNS()
 	}
 	if options.ExcludePatterns == nil {
 		options.ExcludePatterns = []string{}