FR - maj ip list RTM

[xaa]

Refering to the discussion with the SoYouStart support, the IP list on page https://docs.ovh.com/fr/dedicated/monitoring-ip-ovh/ need to be updated.

Also, could you add a descripton for any IP of the list, please ?

It's unclear if all ip must be added or only some of them are required (depending of the client server localization such as rbx, gra, sbg etc)