Imports
- github.com/golang/glog
- github.com/pkg/errors
- github.com/coreos/etcd/clientv3
- github.com/coreos/etcd/clientv3/clientv3util
- github.com/prometheus/client_golang/prometheus/promhttp
- golang.org/x/sync/errgroup
- github.com/coreos/etcd/etcdserver/etcdserverpb
- github.com/krolaw/dhcp4