Adding Prometheus and Grafana Helm Repositories

11.2 Adding Prometheus and Grafana Helm Repositories

Add the Prometheus and Grafana Helm repositories by issuing the following command:
```
helm repo add prometheus https://prometheus-community.github.io/helm-charts
```
The output will look similar to the following:
```
"prometheus" has been added to your repositories
```

Run the following command to update the repositories:

helm repo update

The output will look similar to the following:

Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "stable" chart repository
...Successfully got an update from the "prometheus" chart repository
...Successfully got an update from the "prometheus-community" chart repository

Update Complete.  Happy Helming!