We just added a properties file to our Swarm setup. This file resides in a separate Jar dependency (assembled in another maven module).
Currently we have to dependency:unpack the Jar to pass a regular file path to propertiesFile of the Mojo(s).
It would come in handy if you could just add the Jar as a plugin dependency and just pass the path inside the jar propertiesFile.
Alternatively passing in a jar:file:...!... URL would be nice too.