Add FileName argument for JobOptsDumperCfg, use it for Digitization
Allow the output file name from JobOptsDumperCfg to be configurable; it previously emitted "OverlayTestConfig.txt" only.
Add the job options dump to PileUp digitization config, and use this options to separate the two digitization new config tests.
Add OverlayJobOptsDumperCfg for use in Overlay tests.
Edited by Rupert Tombs