Optimize load balancer configuration

[hellais]

On AWS you pay the load balancers by the hour, irrespective of how much bandwidth goes over them.

At the moment we are using load balancers and target groups to route traffic to individual microservices. For the direct access, which would not be used in production, we should remove the load balancer in front of them, but rather have direct communication to the container.

This will likely involve doing some refactoring of the networking setup, since we need to configure direct connectivity to each host.

[hellais]

This is probably the same as #93