remove db:test:prepare and replaced with specific drop, create and migrate
remove db:test:prepare and replaced with specific drop, create and migrate

CDLUC3/dmptool,DigitalCurationCentre/roadmap,CDLUC3/dmptool,CDLUC3/roadmap,CDLUC3/dmptool,CDLUC3/roadmap,DMPRoadmap/roadmap,CDLUC3/dmptool,briri/roadmap,CDLUC3/roadmap,briri/roadmap,DMPRoadmap/roadmap,briri/roadmap,DMPRoadmap/roadmap,DigitalCurationCentre/roadmap,CDLUC3/roadmap,DigitalCurationCentre/roadmap