Update default_data.json
Update default_data.json

Update information about Sergii Golovatiuk

Change-Id: Ib50638845497c6ada0d3ea9be89240359b537b41

openstack/stackalytics,0xf2/stackalytics,openstack/stackalytics,openstack/stackalytics,0xf2/stackalytics,0xf2/stackalytics,stackforge/stackalytics,openstack/stackalytics,0xf2/stackalytics,stackforge/stackalytics,stackforge/stackalytics