ops-agent metrics for Google Compute Engine instances running Google Container Optimized OS.
This service scrapes cadvisor every 30s, filters out metrics, and sends the filtered metrics to Google Cloud Monitoring
Code essentially forked from https://github.com/GoogleCloudPlatform/prometheus-engine/blob/7ca3c5c4e2a43cad2e79edbf724bc58cf064e423/pkg/export/gcm/promtest/local_export.go