changes to traffic generation


git-svn-id: https://gnunet.org/svn/gnunet@32005 140774ce-b5e7-0310-ab8b-a85725594a96
reward function made differentiable

git-svn-id: https://gnunet.org/svn/gnunet@32006 140774ce-b5e7-0310-ab8b-a85725594a96