Sysadmin: Adding QtWebEngine dependencies

Adding some dev libs for CI's Ubuntu 11.10 and 12.04 nodes required
by QtWebEngine module.

Change-Id: Ieec763cad1b48e1f7e467d6254c3753b4a274e22
Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>
Reviewed-by: Heikki Halmet <heikki.halmet@digia.com>