Avoid race conditions between tests
Renaming ntuple_file options some qmtests preventing them from writing on the same file.
In fact this can expose to intermittent issues and file corrumptions.
Solution: moving the ntuple_file definition from .yaml files (that can be read by multiple qmtests) to .py option files dedicated to each qmtest.
Removing DV options setting if equal to the defaults. Removing also commented bits of codes.
Close #36 (closed)