cms-sw/cmssw CMSSW_9_4_0_patch1 on GitHub

#21332 from @cms-bph-trigger: Make the HLT vertex filters robust to L3Muon duplicates - 94X backport hlt
#21311 from @ttrk: keep islandPhoton related collections via HI eras (94X) reconstruction
#21295 from @fwyzard: Include "Scouting" packers and collections in MC production hlt
#21286 from @ggovi: Fix for boost version manager tool db
#21285 from @capalmer85: add PU=0 at the start of vectors (94x) simulation
#21277 from @tuos: Adding hiCentrality and hiClusterCompatibility for XeXe re-reco operations reconstruction
#21274 from @fwyzard: Add modes to ignore the original masks and prescales l1
#21215 from @mverzett: DeepCSV/DeepCMVA discriminators analysis reconstruction
#21187 from @fabozzi: Using dasgoclient for das queries in runTheMatrix (94X) operations pdmv upgrade
#21160 from @ghellwig: [9.4.X] Fix arrow plots in geometry comparison tool alca
#21081 from @thomreis: L1T DQM - Fix for OMTF data to emulator check configuration - 94x dqm
#21049 from @alberto-sanchez: making cfg compatible with py8 230 -94x generators