[kube-prometheus-stack] add tpl to some templates

[denzhel]

What this PR does / why we need it

We're moving our infra charts from Terraform to ArgoCD/ApplicationSets and we need the ability to template nodeSelector and tolerations

• DCO signed
• Chart Version bumped
• Title of the PR starts with chart name (e.g. [prometheus-couchdb-exporter])

[jkroepke]

Your change is already covered by additionalConfig, e.g. alertmanager.alertmanagerSpec.additionalConfig

alertmanager:
  alertmanagerSpec:
    additionalConfig:
      nodeSelector: {}

That should solve your case?

[denzhel]

Your change is already covered by additionalConfig, e.g. alertmanager.alertmanagerSpec.additionalConfig

alertmanager:
  alertmanagerSpec:
    additionalConfig:
      nodeSelector: {}

That should solve your case?

Thanks @jkroepke for the quick response !

Correct, that solved the issue I had with alertmanager and prometheus but I'm still having the issue with prometheus-operator since there is no prometheusOperatorSpec.additionalConfig handling inside the template files.

I updated my PR accordingly.