camel-hdfs feature does not work as it refers to jetty-bundle-version which does not resolve

In the feature file the camel-hdfs feature loads the bundle:
<bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.jetty/${jetty6-bundle-version}</bundle>

As jetty-bundle-version is not defined that does not work.

I see two possible solutions:
1. use jetty-version instead
2. Remove the bundle as the feature also loads the war feature which should load jetty

I will try to fix with variant 1. Does anyone know why we need the bundle if we have the war feature?