Minor Description
The ${includes} property in custom.properties is used to list property files that will be read and evaluated by Karaf at startup. However, if a file listed this way does not exist, then Karaf fails to start. When using this as a means to give a user the possibility to add custom properties, it makes sense to change this behaviour so that Karaf picks up the file if it exists otherwise it will be ignored and Karaf will continue its startup process.