Imports github.com/elastic/beats/libbeat/common github.com/elastic/beats/libbeat/outputs/transport github.com/elastic/beats/libbeat/plugin github.com/elastic/beats/libbeat/logp github.com/elastic/beats/libbeat/common/op github.com/joeshaw/multierror Standard library imports bytes crypto/tls crypto/x509 errors fmt io/ioutil encoding/pem