switch travis to use db:test:prepare instead of db:migrate
switch travis to use db:test:prepare instead of db:migrate

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