ISPN-2042 Add easy trace logging facility to the test suite
ISPN-4745 Cluster Listener TX Batch incorrect when sending multiple
events

* Fixed typo where the events were sent inside the for loop
Revert "Revert rebalancing per cache"

This reverts commit 8cbba22ae625c7dd3e8f5ff389b71f4b49aec2b4.