update UserPhotonFlux in Pythia8_i according to AGENE-1662 (!20511) · Merge requests · atlas / athena · GitLab

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Ewelina Maria Lobodzinska requested to merge ewelina/athena:21.6-jetrec into 21.6 Jan 22, 2019

update UserPhotonFlux in Pythia8_i according to AGENE-1662