Imports
- github.com/google/trillian/monitoring/prometheus
- github.com/google/certificate-transparency-go/gossip/minimal
- github.com/golang/glog
- github.com/google/trillian/crypto/keys/der/proto
- github.com/google/trillian/crypto/keys/pem/proto
- github.com/prometheus/client_golang/prometheus/promhttp