PyJobTransforms: Add option to delete unneeded intermediate files
As discussed in https://its.cern.ch/jira/browse/ATLASJT-423 this MR adds the --deleteIntermediateOutputfiles
option to allow deleting intermediate outputfiles in a multi-step transform. It only deletes (most) input files named tmp*
after each individual sub-step.
Keeping this MR in "Draft" status for the moment and tagging @mavogel, @walkerr, @emoyse for their feedback.
Edited by Johannes Elmsheuser