[CE-450] Enable access to peer via docker network

It does this by exposing a
single port on the internal
network so that proxies and
etc can access the peer via
the docker network.

Change-Id: Idea8718c2cd755b4071811f69a545691805abefb
Signed-off-by: Alex Meijer <alex@corsha.com>

src/agent/ansible/roles/deploy_compose/fabricsetup/templates/peer-compose.j2

@@ -15,6 +15,8 @@ services:
   {{ peer.name }}:
     container_name: {{ peer.name }}
     image: {{ fabric.repo.url }}fabric-peer:{{  fabric.baseimage_tag }}
+    expose:
+      - "7051"
     network_mode: bridge
     hostname: {{ peer.name }}
     environment: