change database configuration file name for multi application installations

inventory.yml

@@ -9,7 +9,7 @@ config:
 .base: &base
   local: true
   deploy_path: /home/XXX/{{application}}_{{alias}}
-  db_conf_path: /home/XXX/dbConf/.my_{{alias}}.cnf   # optional for database actions
+  db_conf_path: /home/XXX/dbConf/.{{application}}_{{alias}}.cnf   # optional for database actions
   shared_files:
   - .htaccess
   - .htpasswd