Rerunning failed tests ignores requested module

[jonmo...@googlemail.com]

The testid plugin is great, but when I rerun --failed tests, it runs tests for all modules, not just the one I requested.

For example, I run

nosetests test.test_datasets --with-id

There are some failures, but I move on and run

nosetests test.system_test --with-id

I make changes and rerun

nosetests test.system_test --failed

and nose runs all the failed tests from both test_datasets and system_test. It should only run system_test, as that is what I've asked for. If I wanted all the failed tests, surely I would just run

nosetests --failed