Rudder

The idea here is to be able to have a fully automated, non-interactive post-install.

It implies that by default, a new Rudder installation will have all the known network of the machine added in allowed networks.

We need to update the documentation on installation, with a new step "reviewing networks access".

This is possible because we added the network detection in linked ticket (#9010)

We also must provide a way to give the authorized networks to automate rudder install (either by API, or by looking for the existence of a specific env variable and use it in place of auto, or with a dedicated command).