Move repository address to variable url.ceph_repository

Change-Id: I0304ce2c5b4f90f83130f7b7959a410d19f8ed32

docker/radosgw/Dockerfile.j2

@@ -1,7 +1,7 @@
 FROM {{ image_spec("openstack-base") }}
 MAINTAINER {{ maintainer }}
 
-COPY sources.list.debian /etc/apt/sources.list.d/ceph.list
+COPY {{ render('sources.list.debian.j2') }} /etc/apt/sources.list.d/ceph.list
 RUN apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 460F3994 \
     && apt-get update \
     && apt-get install -y --no-install-recommends radosgw \

docker/radosgw/sources.list.debian

@@ -1 +0,0 @@
-deb http://eu.ceph.com/debian-jewel jessie main

docker/radosgw/sources.list.debian.j2

@@ -0,0 +1 @@
+deb {{ url.ceph_repository }} jessie main

service/files/defaults.yaml

@@ -6,3 +6,5 @@ configs:
     port:
       cont: 7480
     key: "Changeme"
+url:
+  ceph_repository: http://eu.ceph.com/debian-jewel