Update gemspec to use tested version of bunny gem
Update gemspec to use tested version of bunny gem

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