Fixes https://github.com/pytest-dev/pytest/issues/759 - Adjust test_parametrized_ids_invalid_type, create list to convert tuples Ref: https://github.com/pytest-dev/pytest/issues/1857#issuecomment-552922498 - Changelog for int to str conversion Ref: https://github.com/pytest-dev/pytest/issues/1857#issuecomment-552932952