Remove default MySQL accounts and test DB
Remove default MySQL accounts and test DB

This is essentially the same as running `mysql_secure_installation` to
secure a new installation of MySQL server. It will do the following:
```
Notice: bdcb15b2707871ad9f984167ed411735f4cdbaf6@mysql-master-1]/ensure: removed
Notice: c09ab9f314b9ab575b1fb5ed6c264cf837cf5cde@mysql-master-1]/ensure: removed
Notice: /Stage[main]/Mysql::Server::Account_security/Mysql_database[test]/ensure: removed
Notice: bdcb15b2707871ad9f984167ed411735f4cdbaf6@::1]/ensure: removed
Notice: c09ab9f314b9ab575b1fb5ed6c264cf837cf5cde@localhost]/ensure: removed
Notice: bdcb15b2707871ad9f984167ed411735f4cdbaf6@127.0.0.1]/ensure: removed
```

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