Imports
- cloud.google.com/go/compute/metadata
- github.com/golang/glog
- github.com/prometheus/client_golang/prometheus
- golang.org/x/oauth2
- golang.org/x/oauth2/google
- google.golang.org/api/googleapi
- google.golang.org/api/monitoring/v3
- k8s.io/heapster/common/gce
- k8s.io/heapster/metrics/core