This code have been remove here 4bab65edcb (diff-0938042fe2382aeb10032aa7f8444995) but it is required otherwise we get an `Evaluation Error: Unknown variable: 'install_db_args'.` when using `manage_config_file = false`
The current install pattern used by this module is the following:
1. Install package
2. Install the DB
3. Make the config files
In some cases this prevents MySQL to start, because some variables in
the config file have an impact on the DB installation.
Example with a custom innodb_data_file_path:
[ERROR] InnoDB: space header page consists of zero bytes in data file
/var/lib/mysql/ibdata
This commit changes the order to do:
1. Install package
2. Make the config files
3. Install the DB
