Fix 'No such file or directory' error when attempting to release on traivs
Fix 'No such file or directory' error when attempting to release on traivs

ref: https://travis-ci.org/kawamuray/prometheus-kafka-consumer-group-exporter/builds/301763076

kawamuray/prometheus-kafka-consumer-group-exporter,kawamuray/prometheus-kafka-consumer-group-exporter