Keep it building after upgrade of ubuntu image to 14.04
Keep it building after upgrade of ubuntu image to 14.04

* Do not mess up with /etc/apt/sources.list
* Do apt-get -y upgrade just after apt-get update

Signed-off-by: Gianpaolo Macario <f8885408b8c3d931b330bae3c3a28a3af912c463@gmail.com>

gmacario/easy-build