otlp resource attribute promotion and UTF-8 for Prometheus 3.0 in helm chart

[jmohoric101]

Is your feature request related to a problem ?

Per the documentation; The prometheus configuration file needs to be updated to allow for otlp attributes to promote. For prometheus below 3.x.x you need to add attributes to promote and for above 3.x.x you need to update the translation strategy. https://prometheus.io/docs/guides/opentelemetry/#promoting-resource-attributes. The Helm Chart needs updated to allow for this.

Describe the solution you'd like.

To illustrate, the Prometheus config goes in an otlp section at top level, and might look like this:

global:
  scrape_interval: 15s
  scrape_timeout: 15s

otlp:
  promote_resource_attributes: ["env", "service.name"]

storage:
  tsdb:
    out_of_order_time_window: 10m

Describe alternatives you've considered.

none

Additional context.

Here is a link to an issue on the prometheus repo. https://github.com/prometheus/prometheus/issues/14580