vendor in new containers/storage

vendor in latest containers/storage which contains a fix for when
a filesystem that overlayfs is on is ENOSPC.

adding pgzip/compress as a new dep for c/s

Signed-off-by: baude <bbaude@redhat.com>

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

@@ -5,7 +5,6 @@ import (
 	"bufio"
 	"bytes"
 	"compress/bzip2"
-	"compress/gzip"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -22,6 +21,7 @@ import (
 	"github.com/containers/storage/pkg/pools"
 	"github.com/containers/storage/pkg/promise"
 	"github.com/containers/storage/pkg/system"
+	gzip "github.com/klauspost/pgzip"
 	rsystem "github.com/opencontainers/runc/libcontainer/system"
 	"github.com/sirupsen/logrus"
 )
@@ -499,6 +499,8 @@ func (ta *tarAppender) addTarFile(path, name string) error {
 		hdr.Gid = ta.ChownOpts.GID
 	}
 
+	maybeTruncateHeaderModTime(hdr)
+
 	if ta.WhiteoutConverter != nil {
 		wo, err := ta.WhiteoutConverter.ConvertWrite(hdr, path, fi)
 		if err != nil {
@@ -640,11 +642,12 @@ func createTarFile(path, extractDir string, hdr *tar.Header, reader io.Reader, L
 	var errors []string
 	for key, value := range hdr.Xattrs {
 		if err := system.Lsetxattr(path, key, []byte(value), 0); err != nil {
-			if err == syscall.ENOTSUP {
+			if err == syscall.ENOTSUP || (err == syscall.EPERM && inUserns) {
 				// We ignore errors here because not all graphdrivers support
 				// xattrs *cough* old versions of AUFS *cough*. However only
 				// ENOTSUP should be emitted in that case, otherwise we still
-				// bail.
+				// bail.  We also ignore EPERM errors if we are running in a
+				// user namespace.
 				errors = append(errors, err.Error())
 				continue
 			}