GATEWAY-3367: Fixed transaction logging for PD and DQ fan-out.
GATEWAY-3367: Removed redundant condition check.
GATEWAY-3367: Modified PD and QD fan out logic to use passed in assertion message id if there is only one outbound target.
Merge pull request #336 from akong/gateway-3367

GATEWAY-3367: Fixed transaction logging for PD and DQ fan-out.