Nondeterministic output in make small-test

[mernst]

The valid_repos.csv and local_repos.csv files should be sorted, for determinism.
Or maybe they should only be sorted in the context of the make small-test test.

[benedikt-schesch]

I can sort them, but the output should currently be fully deterministic at the moment. Ordering is maintained at all times, even though it is shuffled (deterministically) in local_repos.csv.

[mernst]

When I add a project, the order changes and so I have to run make small-test twice before it will pass locally.