The lucene-grouping.jar is missing from the WildFly modules we build, mainly because we don't take (currently) advantage from it.

Including it would allow end users to use it directly, something which is harder to accomplish when it's not included in the right module.

Also, this would align the structure of the org.apache.lucene module we release with the same one from Infinispan, which is useful as in some situations (when they use the same exact versions) the module ids could clash.