/!\ WIP /!\ Update plugin configuration on update

The installation/update/remove process should deal with the plugin configuration update.

I had the code to update configuration in the database but I'm stuck with the configuration validation of the plugin, made [here](https://github.com/maxailloud/CoreBundle/blob/update-plugin-configuration-on-update/Library/Installation/Plugin/Installer.php#L93).

This validation check if the resource type already exists or not in the database.
When installing no problem, but when updating I'm getting the error that the resource type already exists.

How can I get rid of this validation, only it because we still need to validate the plugin configuration?

I don't know how to achieve this.