Fix race condition in hlt2_reco_baseline_with_mcchecking_MagUp
The hlt2_reco_baseline_with_mcchecking_MagUp
test outputs
histograms and ntuples in the same files as the sibling
hlt2_reco_baseline_with_mcchecking
test. This is fixed here.
In addition, the dumping of options (for debugging) with --output=
is fixed so that each test dumps to a unique file.