LOGSTASH-173: catch exceptions generated by gelf.notify
LOGSTASH-173: catch exceptions generated by gelf.notify

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