Update database_types.md for mysql 5.7 (#2674) [ci skip][skip ci]
Update database_types.md for mysql 5.7 (#2674) [ci skip][skip ci]


rfay/ddev,drud/ddev,drud/ddev,rfay/ddev,rfay/ddev,drud/ddev,rfay/ddev,drud/ddev,rfay/ddev,drud/ddev