TriggerMenuMT: python 2 fix

Fix use of metaclass to work with both py2 and py3.

WARNING: big files (>100K) are found in the changeset

148K in file Trigger/TriggerCommon/TriggerMenuMT/python/L1/Config/ItemDef.py

This merge request affects 1 package:

• Trigger/TriggerCommon/TriggerMenuMT

Adding @bernius as watcher

added Trigger TriggerMenu master review-pending-level-1 labels

enabled an automatic merge when the pipeline for d624fb15 succeeds

CI Result FAILURE (hash d624fb15)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 18751]

Jenkins please retry a build

WARNING: big files (>100K) are found in the changeset

148K in file Trigger/TriggerCommon/TriggerMenuMT/python/L1/Config/ItemDef.py

This merge request affects 1 package:

• Trigger/TriggerCommon/TriggerMenuMT

Adding @bernius as watcher

CI Result FAILURE (hash d624fb15)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 18789]

Timeout appears to be due to a Gaudi change.

added review-approved label and removed review-pending-level-1 label

canceled the automatic merge

merged

mentioned in commit f2e7e32c

added sweep:ignore label

mentioned in merge request !35664 (closed)