Add Kafka collector using mx4j
Merge pull request #413 from dctrwatson/kafka-collector

Add Kafka collector using mx4j
added passenger stats for phusion-passenger framework
Fix bug of breaking all of the remainings when one of the hosts fails

1. catch and handle possible exceptions raised when executing queries
2. log the errors and keep the remainings running
Merge pull request #416 from xupeng/fix-mysql-collector

Fix bug of breaking all of the remainings when one of the hosts fails
Merge pull request #414 from rohitjalan/master

Passenger Stats Added
Added celerymon monitoring
fixed typos
added more comments and handled the error condition if executable of passenger-memory-stats is not available in OS PATH
Merge pull request #418 from rohitjalan/master

added more comments and handled the error condition if executable of pas...
Merge pull request #417 from rcleere/celerymon

Celerymon monitoring
Doc updates
added snmp raw collector

Change-Id: If0236644808ccda6441954216fa5beeb229a7102
added jcollect network listener collector

Change-Id: Idbcd147e87998212bb6f1f57feea5a5606c83dca
minor fix related to #366, was causing "Permission denied" exceptions on debian
Merge pull request #423 from 50onRed/master

minor fix related to #366, was causing "Permission denied" exceptions on debian
Merge pull request #422 from rtoma/snmpraw

added snmp raw collector
Merge pull request #421 from rtoma/jcollectd

added jcollect network listener collector
Doc updates
Work around missing ElementTree.ParseError on older python versions