Fix a bug in revert() of usertask.
Fix a bug in revert() of usertask.
Add db_base test and refactor the code
Add db_base test and refactor the code
Add db_base test and refactor the code
Add release_db_pool to delete db_pool
move test_helper to parent folder
merge with master
Merge branch 'master' of https://github.com/Phoenix1708/OpenAcademy_OpenStack_Flyway
change print(exception) in unit test to self.fail(exception)