"Kapa Hanga" I think. But remember the haka is not a good luck charm performed by the ABs to help them win. It a challenge to there opponents to play there best against them and vice versa.
the one they do when they are about to lose
I didnt watch it because I didnt know they were playing, but theres always the replay lolz, but Im guessing it was the kapa o pango haka
The surrendering one!