DB/Creature: Misc updates for AT Valiants and Champions.
DB/Conditions: Gossip conditions for AT Valiants and Champions.
DB/Conditions: Update instance data enum value on condition for Descent into Madness teleporter gossip (previous value was 14 which now refers to BOSS_BRIGHTLEAF)
DB/Achievement: Now We're Cookin

By @Vincent-Michael closes #3993
DB/Creature: Fix Void Conduit InhabitType
Merge branch '3.3.5' of https://github.com/TrinityCore/TrinityCore into ghbb