ActiveMQ replays journal file on a clean/unclean shutdown with transacted session + Non persistent Messages

Hi,

Sending non persistent messages on a Transacted session is causing activeMQ to keep and replay (on startup) unnecessary journal files. If all messages are in this situation activemq will replay the whole journal file even with a clean shutdown.

 The problem is because is if the transaction has no persistent operation, the metadata.lastUpdate is never updated.

https://github.com/apache/activemq/blob/master/activemq-kahadb-store/src/main/java/org/apache/activemq/store/kahadb/MessageDatabase.java#L1400