Summary:
## Details
1. Add hostname and refactor everyone to common function.
2. Make prometheus-cpp a git submodule and update build scripts
3. Add more metrics, excluding per network and per GPU metrics.
4. Bump version.

# TestPlan

Ran on my laptop using a docker container.

## How to Run
Please install Docker desktop.
1. Download this docker file in a directory https://gist.github.com/briancoutinho/c5faaa60e49a5ad796b972e6b3ef175d
2. Build using docker build . -t prometheus:v2
3. Run docker container forwarding port and mounting dynolog open source repo
`docker run -p 9090:9090 -it -v ~/Work/dynolog_oss/dynolog:/workspace/dynolog prometheus:v2 /bin/bash`
4. Build dynolog ./scripts/build.sh

To get the logging setup add the following in prometheus.yml
```
  - job_name: "dynolog"
    static_configs:
      - targets: ["localhost:8080"]
```
Then run prometheus and dynolog.

```cd /workspace/prometheus/prometheus-2.44.0.linux-amd64;
./prometheus --config.file prometheus.yml &
cd -
./build/bin/dynolog -kernel_monitor_reporting_interval_s 10 -use_JSON -use_prometheus &
```

Open [https://localhost:9090](http://localhost:9090/metrics)/

![Screenshot 2023-10-16 at 5 52 05 PM](https://github.com/facebookincubator/dynolog/assets/6922212/bf19cb2d-654c-4f5f-9f06-e9d2f46c77ef)
![Screenshot 2023-10-16 at 5 53 13 PM](https://github.com/facebookincubator/dynolog/assets/6922212/cf63e741-df68-424f-900e-2bb8d6d8c221)
![Screenshot 2023-10-16 at 5 53 25 PM](https://github.com/facebookincubator/dynolog/assets/6922212/717d0704-4f4d-4c66-8dc4-d7b1c70dc40e)
![Screenshot 2023-10-16 at 5 53 29 PM](https://github.com/facebookincubator/dynolog/assets/6922212/81fd1fa5-e487-423c-9096-926120978032)

Pull Request resolved: #181

Test Plan:
Imported from GitHub, without a `Test Plan:` line.
Brian: Come on Test plan was there in the doc :(

Differential Revision: D50393435

Pulled By: briancoutinho

fbshipit-source-id: 89a067c979995b9328be821a595285dbc6fe4dab