Fix L0-related failing Brunel tests

Following the removal of L0 LHCb!2735 (merged) several Brunel tests fail for trivial reasons. One test attempts to load the L0DU module and several expect a printout from PVChecker giving stats for L0-accepted events (gone with Rec!2197 (merged)).

Merge together with Rec!2197 (merged) Rec!2179 (merged) Rec!2175 (merged) Rec!2198 (merged) Rec!2176 (merged) Rec!2195 (merged) Phys!765 (merged) Phys!772 (merged) Phys!774 (merged) Alignment!141 (merged) Panoramix!78 (merged) DaVinci!425 (merged)

Closes #11 (closed)