Define variable beamspot pile-up digi for MC21a (!52509) · Merge requests · atlas / athena · GitLab

Tadej Novak requested to merge tadej/athena:digi/var into master Apr 23, 2022

Define variable beamspot pile-up digitisation for MC21a:

define proper fractions as in ATLASDP-52
fix typo in pile-up profiles
disable rounding of job size when running with multiple steps
add/update ART tests

/cc @jchapman @tlari