Make some classes final
Fix a TODO in ProtobufWrapperIndexingTest
Replace deprecated usages of Lucene version constants (Version.LUCENE_4_10_1 -> Version.LATEST)
ISPN-5004 Enhance ProtobufMetadataManagerMBean

* Move ProtobufMetadataManagerMBean to infinispan-remote-query-client module, unfortunatelly could not
  keep the same package so a deprecated copy of ProtobufMetadataManagerMBean exists in previous location
  too for backward compatibility

* Rename method: displayProtofile( ) --> getProtofile( )

* Add methods getProtofileNames, getProtofile, getFilesWithErrors, getFileErrors