node-feature-discovery
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nfd-worker: use single http port for metrics and healthz
This PR drops the separate http servers for metrics and the health endpoint. In addition, ditch the grpc-health and replace it with plain http.
The PR is split into three commits:
- Drop the gRPC health port
- Convert
--metricsto--portUse a single port for serving http. In addition to metrics we will have the healthz endpoint. - Add healthz endpoint