[wiki] Add SR-IOV information and improve network tables
Result for the global hardware page: https://www.grid5000.fr/w/User:Bjonglez/Hardware
And for a site hardware page: https://www.grid5000.fr/w/User:Bjonglez/Nancy:Hardware
GitLab upgrade completed. Current version is 18.7.4
https://about.gitlab.com/releases/2025/12/18/gitlab-18-7-released/
Result for the global hardware page: https://www.grid5000.fr/w/User:Bjonglez/Hardware
And for a site hardware page: https://www.grid5000.fr/w/User:Bjonglez/Nancy:Hardware