HPCC-9258 Make Roxie UDP ports configurable

Roxie uses ports 8887, 9000, 9001, 9002, and 9003 for UDP traffic. These
should be configurable.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4413 from richardkchapman/roxie-udp-ports

HPCC-9258 Make Roxie UDP ports configurable

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>