Removing add-apt-repository from Dockerfile
Removing add-apt-repository from Dockerfile

Change-Id: I4aceb121630ed40cc34950fb450ef832aa5fd8cf
Signed-off-by: garciadeblas <7828b9983e92b4a76141e3126fd0a6d25acf078f@telefonica.com>

igordcard/RO,igordcard/RO