Major Description
The "archive" goal of the karaf-maven-plugin offers the possibility to modify the path prefix of files in the created archive (defaults to "${project.artifactId}-${project.version}").
This seems to work for all cases except someone wants to set the pathPrefix to an empty string to actually disable the prefix.
The cause of this is the fact that maven interprets the empty pathPrefix tag not as an empty string but as null and then uses the value given as defaultValue.