Install a new VPN endpoint at Rocquencourt

There is actually only one VPN endpoint at Rocquencourt, on louvre.

Louvre has recently experienced a catastrophic failure and had to be rebooted, shutting down all existing network connections. She will also be moved to a different physical bay, soon, once again shutting down connections for all users.

This can be avoided by creating a different VPN endpoint in Rocquencourt, on a different host.

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Migrated from T1526 (view on Phabricator)