add low pT collection
Add "LowPtRoITrackParticles" collection in BPHY20 and BPhysBGammaFinder. Add flag "AllowFailures" to DerivationFramework__Thin_vtxTrk
Add "LowPtRoITrackParticles" collection in BPHY20 and BPhysBGammaFinder. Add flag "AllowFailures" to DerivationFramework__Thin_vtxTrk