`helm install --wait` results in a failed deployment

The Helm installation instructions for the microservice mode suggest the following command:

```
curl -Lo values-micro-services.yaml https://raw.githubusercontent.com/grafana/pyroscope/main/operations/pyroscope/helm/pyroscope/values-micro-services.yaml
helm -n pyroscope-test install pyroscope grafana/pyroscope --values values-micro-services.yaml
```

A commonly used flag for `helm install` is `--wait`, which makes sure all pods are up and ready before the command exits, waiting for X minutes (configurable via the `--timeout` flag). If users use the `--wait` flag directly or via a helm wrapper, the Pyroscope installation will currently fail. This is because the bucket is created in Minio after `helm install` completes, which in this case will not happen since store-gateways need a bucket to get into the ready state.