update with comments to improve resource management when running JGTowerMaker
This merge request contains the following changes:
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JGTowerContainer is added into xAODTrigL1CaloCLIDs.cxx
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JGTower is added to the output stream in JGTowerMakerEnable.py
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AllCalo & TriggerTowers would only be retrieved once per event
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Only the JGTowers with energy (Et!=0) output to AOD
Edited by Chiao-Ying Lin