Code review comment for lp:~maddevelopers/mg5amcnlo/fix_majorana_flipping

Hi I've simplify/change the parralel test for the 2 to 3 mssm.
This should be faster.
and at least, you will have faster information if it works or not.
So I relaunched that parralel test. And so far, he succesfully passed on thousands of them.

So I'll approve the review. (Off course if a surprise appear in the tests, I will shout).