Changes since CMSSW_11_1_0_patch3:
CMSSW_11_1_0_patch3...CMSSW_11_1_0_p3_ROOT618
CMSDIST Changes between Tags REL/CMSSW_11_1_0_patch3/slc7_amd64_gcc820 and REL/CMSSW_11_1_0_p3_ROOT618/slc7_amd64_gcc820:
- cms-sw/cmsdist#6068 from @silviodonato: Move back to ROOT 6.18 (11_1)