Testconfig: Renaming WebSockets CI project

WebSockets was moved from playground to qt and renamed to
QtWebSockets.

Change-Id: I8faaaec9aef4df1b0d3425e1e028639e951be818
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>