* Convert `latency`/`latencies` in metrics name to `duration`. ([#74418](https://github.com/kubernetes/kubernetes/pull/74418), [@danielqsj](https://github.com/danielqsj))
    * The following metrics are changed and mark previous metrics as deprecated:
        * `rest_client_request_latency_seconds` -> `rest_client_request_duration_seconds`
        * `apiserver_proxy_tunnel_sync_latency_secs` -> `apiserver_proxy_tunnel_sync_duration_seconds`