[pve-devel] [PATCH pve-network] sdn: add missing new-line at the end of frr config and update tests

[Gabriel Goller]

duplicate of https://lore.proxmox.com/pve-devel/20250919094122.73373-7-g.goller@proxmox.com/

but IMO we can already apply this one, so I can take it out of the
template series.

Consider:
Acked-by: Gabriel Goller <g.goller at proxmox.com>