Open requested to merge mimazure-TMP-mtsim10 into master
This temporary solution will solve the failing Gauss (Sim10) in all Run3 nightly slots i.e. lhcb-head, lhcb-gaudi-head, lhcb-head-2, lhcb-lcg-dev3, lhcb-lcg-dev4, lhcb-lcg-test, lhcb-master.
Please note that most of the tests will be still failing. This is because we have recently added Gaussino and Geant4 MT to these nightly slots and Gauss(Sim10) works only in ST mode. We have to wait until
Futurev4 with Gauss(-on-Gaussino) will become the master branch.