Add hacking check for MagnetoDB

Fix broken hacking checks http://docs.openstack.org/developer/hacking/ # H101 Use TODO(NAME) # H201 no 'except:' at least use 'except Exception:' # H233 Python 3.x incompatible use of print operator # H234 assertEquals is deprecated, use assertEqual # H301 one import per line # H302 import only modules. # H30...

Add cleanup option in tempest.conf for MagnetoDB

Most time in devstack job is spent for creating and deleting tables. We can skip deleting in teardown methods to speed up devstack job dramatically. For that we need to make cleaning up process configurable.