ISPN-4225 Upgrade to JGroups 3.5.0.Beta5
ISPN-4190 Use Message.Flag.DONT_LOOPBACK instead of RequestOptions.setExclusionList

DONT_LOOPBACK is now a transient flag
ISPN-3742 StateTransferReplicationQueueTest random failures

Disable async marshalling, and wait for all the commands to be replicated.