LimitExceededException: Add missing serialVersionUID

Change-Id: Idfd46326cd707327463096d8a0c7384f7835cd2f
diff --git a/java/com/google/gerrit/server/notedb/LimitExceededException.java b/java/com/google/gerrit/server/notedb/LimitExceededException.java
index 9e0969b..69f9241 100644
--- a/java/com/google/gerrit/server/notedb/LimitExceededException.java
+++ b/java/com/google/gerrit/server/notedb/LimitExceededException.java
@@ -26,6 +26,8 @@
  * </ul>
  */
 public class LimitExceededException extends StorageException {
+  private static final long serialVersionUID = 1L;
+
   LimitExceededException(String message) {
     super(message);
   }