Steering script for multiple toyMC submission

[kdund]

We want to be able to define a range of toyMC runs (with different true generate_args, different signals tested, etc) with a steering script, saying for example
"these wimp masses and true signal expectations should be looped over", with N toyMCs per run and M parallel runs for each.

[hammannr]

Do we want to keep the binference-like parameters_to_zip and paramaters_to_vary logic for this or do you have any other idea on how to define parameter scans?