Merge branch 'py3.TriggerMenuMT-20191218' into 'master'

...gerMenuMT/python/HLTMenuConfig/Egamma/PrecisionCaloRec.py

...erMenuMT/python/HLTMenuConfig/Jet/JetRecoConfiguration.py

...riggerMenuMT/python/HLTMenuConfig/Jet/JetRecoSequences.py

...n/TriggerMenuMT/python/HLTMenuConfig/MET/ConfigHelpers.py

...n/TriggerMenuMT/python/HLTMenuConfig/Menu/ChainMerging.py

...ggerMenuMT/python/HLTMenuConfig/Menu/DictFromChainName.py

...ggerMenuMT/python/HLTMenuConfig/Menu/EventBuildingInfo.py

...TriggerMenuMT/python/HLTMenuConfig/Menu/GenerateMenuMT.py

...rMenuMT/python/HLTMenuConfig/Menu/GenerateMenuMT_newJO.py

...n/TriggerMenuMT/python/HLTMenuConfig/Menu/LS2_v1_newJO.py

...TriggerMenuMT/python/HLTMenuConfig/Menu/MenuComponents.py

...TriggerMenuMT/python/HLTMenuConfig/Menu/SignatureDicts.py

Trigger/TriggerCommon/TriggerMenuMT/python/L1/Base/Items.py

Trigger/TriggerCommon/TriggerMenuMT/python/L1/Base/Limits.py

...TriggerCommon/TriggerMenuMT/python/L1/Base/MonCounters.py

...iggerCommon/TriggerMenuMT/python/L1/Base/ThresholdType.py

.../TriggerCommon/TriggerMenuMT/python/L1/Base/Thresholds.py

...r/TriggerCommon/TriggerMenuMT/python/L1/Config/ItemDef.py

...riggerCommon/TriggerMenuMT/python/L1/Config/MonitorDef.py

...ggerCommon/TriggerMenuMT/python/L1/Config/ThresholdDef.py