libpages: Add a new possible record prefix to get around domain registrars that disallow underscores in the middle of the name.
libpages: Add a new possible record prefix to get around domain registrars that disallow underscores in the middle of the name.

keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/kbfs