Add support for new private legalteamwiki

Depends on I495e024494d0a978 (the wiki being set up) to actually work,
but shouldn't be an issue to have this go live in advance, I think?

Bug: 61222
Change-Id: I31b4d6f955b236eb72123e918fa3ca7d59ca7211
Merge "Add support for new private legalteamwiki"