Fix network topology diagram

DHC-1261

Change-Id: I88d838429d1ac36ec08a6579fc7d702c40c63819
Signed-off-by: Rosario Di Somma <rosario.disomma@dreamhost.com>
Merge pull request #19 from rodis/dhc-1261-fix-network-topology

Fix network topology diagram
Override network_topology template

DHC-1261

Change-Id: I0e52043c3c27442d556b9e06cec19f76856cdf8e
Signed-off-by: Rosario Di Somma <rosario.disomma@dreamhost.com>
Merge pull request #20 from rodis/dhc-1261-fix-network-topology

Override network_topology template
Update the hogan version

Horizon has moved to hogan 2.0, so we need to as well.

Change-Id: I349d85943fa262d4e077e7c91543b8a2a84de3cb
Signed-off-by: Doug Hellmann <doug.hellmann@dreamhost.com>
Merge pull request #21 from dhellmann/update-hogan

Update the hogan version