RO Dockerfile: added cloud-archive:queens deb repo

Change-Id: I0855e225918720987b4a798636841db3a336a9aa
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

docker/RO/Dockerfile

@@ -3,6 +3,7 @@ from ubuntu:xenial
 MAINTAINER Gennadiy Dubina <gennadiy.dubina@dataat.com>; Alfonso Tierno <alfonso.tiernosepulveda@telefoncia.com>
 
 RUN apt-get update && apt-get -y install curl software-properties-common git
+RUN DEBIAN_FRONTEND=noninteractive add-apt-repository -y cloud-archive:queens
 RUN apt-get update && apt-get install -y python-setuptools python-wheel mysql-client python-bitarray python-pip
 RUN DEBIAN_FRONTEND=noninteractive pip2 install pip==9.0.3 pyangbind