fix database config for tests with mysql
fix database config for tests with mysql

joshuairl/rpush,eleostech/rapns,rafal-radziszewski/rpush,chiu/rpush,amaierhofer/rpush,jmnsf/rpush,kjnsn/rpush,aried3r/rpush,rafal-radziszewski/rpush,zakwanhaj/rpush,zenjoy/rpush,rpush/rpush,mandarin6b0/rpush,ileitch/rapns,krakatoa/rpush