Intelligently create sample `user_data`
Intelligently create sample `user_data`

The `user_data` being used in the `TestGerokUser` Case is now created as
a mixture of the cartesian product of certain edgecases (combinations of
missing traffic entries, 0-2 hosts) and an iterating, and thus unique,
part contributing attributes like `name` and `password`.

MarauderXtreme/sipa,agdsn/sipa,agdsn/sipa,agdsn/sipa,lukasjuhrich/sipa,lukasjuhrich/sipa,agdsn/sipa,lukasjuhrich/sipa,MarauderXtreme/sipa,lukasjuhrich/sipa,MarauderXtreme/sipa