Some addons can create their tables in keycloak database

Problem

If we don't specify a custom addon/admin-tool config file, addons with postgres database (ex. gitea) create their tables in keycloak database. For example, with a custom config file socle.ini which contains keycloak database parameters for the socle, the addon tables are created in keycloak database :

eole3 --config socle.ini build addon -n gitea

Solution

In build and config command, config files need to be sorted :

1. Default socle config files vars.ini and cluster-vars.ini
2. Custom config files specified with --config option before the command
3. Default addon/admin-tool config file

But now, addons/admin-tools have always the default configuration.
We must add --config option for addon and admin-tool service type and add these custom addon/admin-tool config files in last.