vendor: move to new continuity import paths

Signed-off-by: Stephen J Day <stephen.day@docker.com>

fs/fstest/compare.go

@@ -4,8 +4,8 @@ import (
 	"io/ioutil"
 	"os"
 
+	"github.com/containerd/continuity"
 	"github.com/pkg/errors"
-	"github.com/stevvooe/continuity"
 )
 
 // CheckDirectoryEqual compares two directory paths to make sure that

fs/fstest/continuity_util.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 
-	"github.com/stevvooe/continuity"
+	"github.com/containerd/continuity"
 )
 
 type resourceUpdate struct {

fs/fstest/file.go

@@ -6,7 +6,7 @@ import (
 	"path/filepath"
 	"time"
 
-	"github.com/stevvooe/continuity/sysx"
+	"github.com/containerd/continuity/sysx"
 )
 
 // Applier applies single file changes