NOISSUE - Enable empty Transformers (#2810)

Signed-off-by: Dusan Borovcanin <borovcanindusan1@gmail.com>

consumers/messages.go

@@ -152,8 +152,7 @@ func makeTransformer(cfg transformerConfig, logger *slog.Logger) transformers.Tr
 		logger.Info("Using JSON transformer")
 		return json.New(cfg.TimeFields)
 	default:
-		logger.Error(fmt.Sprintf("Can't create transformer: unknown transformer type %s", cfg.Format))
-		os.Exit(1)
+		logger.Warn(fmt.Sprintf("No transformer created: unknown transformer type %s", cfg.Format))
 		return nil
 	}
 }