fix(db): create and drop always result in exit code 1
fix(db): create and drop always result in exit code 1

fixes #550

Signed-off-by: Tobias Gurtzick <b40981aab75932c5b2f555f50769d878e44913d7@wizardtales.com>

db-migrate/node-db-migrate,db-migrate/node-db-migrate