Add serialVersionUID to the exception class

Author: kamalcph

storage/api/src/main/java/org/apache/kafka/server/log/remote/storage/RetriableRemoteStorageException.java

@@ -23,6 +23,8 @@
  */
 public class RetriableRemoteStorageException extends RemoteStorageException {
 
+    private static final long serialVersionUID = 1L;
+
     public RetriableRemoteStorageException(String message) {
         super(message);
     }