Enable groupByFlatten regression test for MarkLogic (XML).
Enable groupByFlatten regression test for MarkLogic (XML).

jedesah/Quasar,quasar-analytics/quasar,drostron/quasar,drostron/quasar,drostron/quasar,jedesah/Quasar,drostron/quasar,quasar-analytics/quasar,quasar-analytics/quasar,slamdata/quasar,quasar-analytics/quasar,slamdata/slamengine,slamdata/slamengine,jedesah/Quasar,slamdata/slamengine,jedesah/Quasar,djspiewak/quasar