Sweeping !337 from Rel-v29r2 to master. [v29r2] overlay better source selectionCloses ILCDIRAC-941 (!340) · Merge requests · CLICdp / iLCDirac / ILCDIRAC · GitLab

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Ghost User requested to merge cherry-pick-2-9e660f8d-master into master Feb 25, 2021

[v29r2] overlay better source selection

Closes ILCDIRAC-941

See merge request !337 (merged)