Fix Dockerfile-local to get ocata Openstack libraries

Change-Id: I8166aefcf25f9806dd00a4f4e97a40d443095415
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/docker/Dockerfile-local b/docker/Dockerfile-local
index 67a3ca9..9dc2c93 100644
--- a/docker/Dockerfile-local
+++ b/docker/Dockerfile-local
@@ -8,8 +8,8 @@
 
 RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install software-properties-common && \
-    apt-get update && \
     DEBIAN_FRONTEND=noninteractive add-apt-repository -y cloud-archive:ocata && \
+    apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install git make python python-pip debhelper && \
     DEBIAN_FRONTEND=noninteractive apt-get -y install wget tox && \
     DEBIAN_FRONTEND=noninteractive pip install pip==9.0.3 && \