Switch default sql_connection to an in-memory sqlite DB
Switch default sql_connection to an in-memory sqlite DB

kiall/designate-py3,kiall/designate-py3,muraliselva10/designate,kiall/designate-py3,cneill/designate-testing,cneill/designate-testing,kiall/designate-py3,openstack/designate,ramsateesh/designate,tonyli71/designate,ionrock/designate,ramsateesh/designate,richm/designate,cneill/designate,kiall/designate-py3,grahamhayes/designate,grahamhayes/designate,cneill/designate,NeCTAR-RC/designate,openstack/designate,cneill/designate,melodous/designate,richm/designate,melodous/designate,ramsateesh/designate,muraliselva10/designate,melodous/designate,grahamhayes/designate,ionrock/designate,cneill/designate-testing,NeCTAR-RC/designate,openstack/designate,muraliselva10/designate,cneill/designate,tonyli71/designate,ionrock/designate,melodous/designate,tonyli71/designate,cneill/designate