backup redact: print objectID redaction mapping

so that customers can identify the mapping that
reproduces a specific issue

internal/cmd/backup.go

@@ -550,6 +550,15 @@ func backupRedactCmdFunc(cmd *cobra.Command, args []string) error {
 	tbl.Print()
 	fmt.Println()
 
+	if len(redactor.RedactionMap().ObjectIDs) > 0 {
+		tbl = table.New("Object ID", "Redacted Object ID")
+		for k, v := range redactor.RedactionMap().ObjectIDs {
+			tbl.AddRow(k, v)
+		}
+		tbl.Print()
+		fmt.Println()
+	}
+
 	return nil
 }