Add Basic Authentication Support for OpenTelemetryCollector Configuration

[bunkrur]

Proposal

Issue Description
I'd like to be able to use authentication against an OpenTelemetry collector endpoint within the Promiter configuration. Currently, I am having to forward to proxy collector that is handling the authentication and then forwarding to yet another collector (observability for an organization of organizations). It would be amazing to be able to egress to a collector with authentication.

Proposed Solution
Add the ability to specify header authentication

openTelemetryCollector:
  enabled: true
  collectorUri: "http://{{ .Values.runtime.metricSinks.openTelemetryCollector.dns }}:4317"
  headers:
    Authorization:. {{ Values.runtime.metricSinks.openTelemetryCollector.AuthorizationValue}}

Component

Resource Discovery, Scraper

Contact Details

No response

[tomkerkhove]

Interesting idea, are you willing to contribute this?

[bunkrur]

Going to say yes. Can we sync over a call about how you might want it implemented?

[tomkerkhove]

It depends what you want to discuss - I prefer to see what the current documentation lacks that avoids you from finding what you need so that I can improve it for other maintainers (don't get me wrong)