Changes allow for a list of matches and include kafka stats by default.

I was not able to get all of the stats mentioned at the kafka site.
http://kafka.apache.org/documentation.html#monitoring

I also ran into many issue where the hardcoded names of the GarbageCollector in JVM_MBEANS block were not the same as the garbage collectors used. In newer kafka (0.8.1.1) the mbean names were ParNew or Copy  not PS Scavenge for example. This caused failures and no stats at all were reported.

Now I can see all kafka stats, a blacklist can be added later and both the query_list and blacklist can be placed in collector and overridden from config possibly.