Test self.db.db_version_updated in schema upgrade paths A user on the roundup-users mailing list reported that a 'roundup-admin migrate' reported that changes were needed. But it should have done the migration. roundup-admin uses the property db.db_version_updated to tell if there was a migration. Testing never looked at that property. Add a test for that property in all migration updates. AFAICT the test is always successful. So no bug uncovered by these tests.