HPCC-9579 Standalone Roxie coring

Regression from recent confg file refactoring

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #4569 from richardkchapman/roxie-standalone-regression

HPCC-9579 Standalone Roxie coring

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>