Shipped jgroups files should be shipped in root of jar

4.0.0.FINAL and 4.1.0.FINAL are shipping jgroups-*.xml files under config-samples/ directory.

Instead, these files should be located on root so that people can apply configurations such as:

<transport clusterName="infinispan-cluster" distributedSyncTimeout="50000" nodeName="Jalapeno">
<properties>
<property name="configurationFile" value="jgroups-udp.xml"/>
</properties>
</transport>