Upgrade jruby (cherry picked from commit af05119)
Upgrade jruby
(cherry picked from commit af05119)

tinglinux/logstash-kafka,Aloomaio/logstash-kafka,opentable/logstash-kafka,opentable/logstash-kafka,joekiller/logstash-kafka,tinglinux/logstash-kafka,Aloomaio/logstash-kafka,joekiller/logstash-kafka