Integration tests fail when eventuate cdcserver is running

[stevehu]

As we want to run all tests from light-bot on our devops vm with all cdcserver running, we need to figure out why tests fail in light-eventuate-4j. Need light-eventuate-4j cdcserver up and running to perform tests for all examples.

[stevehu]

It happens again today during develop build in light-bot. eventuate-cdc-connector-mysql-binlog fails from time to time when eventuate cdcserver is up and running.