Add new contributor Xu Wang.
Add new contributor Xu Wang.

Change-Id: Ic22ac21218746d34f86d4d2b8ca31ac09af0bf8a

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