fixes for split overlays

Signed-off-by: Christian Goll <cgoll@suse.com>

internal/app/wwctl/container/rename/main_test.go

@@ -2,6 +2,7 @@ package rename
 
 import (
 	"bytes"
+	"os"
 	"path"
 	"testing"
 
@@ -10,7 +11,6 @@ import (
 	"github.com/warewulf/warewulf/internal/pkg/testenv"
 	"github.com/warewulf/warewulf/internal/pkg/warewulfd"
 	"github.com/warewulf/warewulf/internal/pkg/wwlog"
-	"github.com/warewulf/warewulf/internal/pkg/wwlog"
 )
 
 func Test_Rename(t *testing.T) {