Add missing JsonUtil file.
Add missing JsonUtil file.

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