networking: module for static names

[vilvo]

Description of changes

• based on decisions to use static names over internal DNS refactor: dns+dhcp to a module, support short host queries #427
• removes dnsmasq and dhcp from net-vm to other guests
  • WIP: static IPs not assigned to other guests yet

Todo

• @tervis-unikie to allocate static IP for the gui-vm.nix based on netvm.nix
•  disable DHCP in appvms, assign static IPs to app-vms using the appvm template and index(?) (and subnet param?)

Checklist for things done

• Summary of the proposed changes in the PR description
• More detailed description in the commit message(s)
• Commits are squashed into relevant entities - avoid a lot of minimal dev time commits in the PR
• Contribution guidelines followed
• Ghaf documentation updated with the commit - https://tiiuae.github.io/ghaf/
• PR linked to architecture documentation and requirement(s) (ticket id)
• Test procedure described (or includes tests). Select one or more:
  • Tested on Lenovo X1 x86_64
  • Tested on Jetson Orin NX or AGX aarch64
  • Tested on Polarfire riscv64
• Author has run nix flake check --accept-flake-config and it passes
• All automatic Github Action checks pass - see actions
• Author has added reviewers and removed PR draft status

Testing

[vunnyso]

I would suggest we can keep gui-vm IP to older value 192.168.100.3
and what about ghaf-host IP assignment?

[tervis-unikie]

I thought it would have been preferable too, but I did not change the address in hosts.

[vilvo]

I would suggest we can keep gui-vm IP to older value 192.168.100.3 and what about ghaf-host IP assignment?

I'm fine with this. In the end, the ip addresses won't matter. When all of this works, we can use the names only for inter-vm and it will allow us even to change the network if needed/preferred.