Add tpl helm function on kubeStateMetrics url

[mysiki]

By submitting a PR to this repository, you agree to the terms within the CloudZero Code of Conduct. Please see the contributing guidelines for how to create and submit a high-quality PR for this repo.

Description

Add tpl helm function for kubeStateMetrics url to allow use to provide helm variable instead of static value

Testing

No tested, can be done by helm values file like

cloudAccountId: "XYZ"
clusterName: "test"
region: "XYZ"
validator:
  serviceEndpoints:
    kubeStateMetrics: "{{ $.Values.clusterName }}.externalMetrics.svc.cluster.local:8080"

Checklist

• I have added documentation for new/changed functionality in this PR
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not main