A "feature" file is a descriptor of bundles required by a feature. (More info at http://icodebythesea.blogspot.cz/2012/03/making-osgi-deployments-easier-with.html)

We should provide such a file for easy deployment on Karaf. Otherwise users will have to install all artifacts one by one (jboss-loggin, jgroups, infinispan-commons, infinispan-core, commons-pool, jboss-marshalling-osgi, ...)