[prometheus-kube-stack] Enable otlp receiver

[truongnht]

Is your feature request related to a problem ?

For new Prometheus 3.0 to receive OTLP metrics, OTLP receiver feature needs to be enabled via cli arg web.enable-otlp-receiver. This option is not available at this moment in helmchart.

Describe the solution you'd like.

Add option to enable otlp-receiver

Describe alternatives you've considered.

n/a

Additional context.

No response

[bartvanackooij]

You could use the additonalArgs on the prometheus.prometheusSpec to enable it:

prometheus:
  prometheusSpec:
    additionalArgs:
      - name: web.enable-otlp-receiver
        value: ""

[truongnht]

@bartvanackooij let me try out, thanks