ansible/ansible — pull request #3396 by adq (2013-07-01 10:53:14+00:00)
Title: Check if mysql allows login as root/nopassword before trying supplied credentials.

Hi, this adds a check_implicit_auth parameter to mysql_user. On Ubuntu, mysql by default allows connections from root/nopasswd from localhost. If you set check_implicit_auth, it'll try that combination before any other supplied credentials.

This means you can bootstrap it without having to leave a my.cnf file with the db root credentials lying around.