[tempest] dynamically defined tests

Hi, I'm currently trying to use tempest to run a simple series of tests on each of my hypervisors. I would like to have a separate test for each hypervisor instead of a single test for all. For that I need to dynamically define tests. I wrote a simple plugin to run the tests and then I use "sertattr" in a loop to define one "test_" method per hypervisor. The plugin is listed properly, as well as the tests, but when I run them using a regexp or the full test path I get "The test run didn't actually run any tests". I was able to run them using: "python -m unittest discover -s ./multi_hypervisor_tempest_plugin" but tempest run fails. Would anyone have wisdom to share ? Thanks !