Updating Lucene, Infinispan, JGroups, WildFly and depend on JDK7

Main goal is to stay aligned with Infinispan versions and catch up with the Apache Lucene update to version 4.8

 - https://hibernate.atlassian.net/browse/HSEARCH-1564
 - https://hibernate.atlassian.net/browse/HSEARCH-1594
 - https://hibernate.atlassian.net/browse/HSEARCH-1598
 - https://hibernate.atlassian.net/browse/HSEARCH-1599
 - https://hibernate.atlassian.net/browse/HSEARCH-1605