Add Gauss to lhcb-gaudi-head-py3 slot.
While not highest priority, I want to try to see if we can make current Gauss python3 compatible in case we need to make the transition before Gauss on Gaussino is ready.
While not highest priority, I want to try to see if we can make current Gauss python3 compatible in case we need to make the transition before Gauss on Gaussino is ready.