Improve output harness-deployment, showing 2x ip address + (sub)domains

at the end of the output of the `harness-deployment` command it shows the message `To test locally, update your hosts file`
and then the ip address and the list of the (sub)domains
however at the end of the output a new list with ip address 127.0.0.1 and the (sub)domains is show.
The last list of subdomains actually shows the application name concatenated with the namespace

e.g.
```
127.0.0.1 notifications.ch accounts.ch volumemanager.ch sentry.ch jupyterhub.ch argo.ch samples.ch common.ch events.ch workflows.ch
```
this list "works" (resolves) in the kubernetes cluster but not on your local host.

it is very confusing that the second list is show and it also doesn't add much value.

suggestion: hide the last list from the output

Start at the `harness-deployment` command and reproduce the output described in the issue, focusing on where the local hosts-file guidance is assembled. Remove the duplicate 127.0.0.1 domain list while preserving the useful output, then verify the command no longer prints the confusing second list.

Written by the indexing model from the issue text.