ability to use private registry for helm deployment

[seb-835]

When using a private registry to pull image,
the webhook chart / template manifests are missing imagePullSecrets parameters to authenticate against registry.

Should be nice to add in helm templating file:

spec:
{{- if .Values.imagePullSecrets }}
      imagePullSecrets:
{{ toYaml .Values.imagePullSecrets | indent 6 }}

[KevinJoiner]

We could add this ability to rancher-webhook but the setting would not be used unless we also update the rancher server to propagate the value when deploying the rancher-webhook helm chart. You can create a feature request in https://github.com/rancher/rancher project since the rancher pod is responsible for managing the deployment values of rancher-webhook.

[KevinJoiner]

With the changes added here #41142. Users can now pass arbitrary helm values down from Rancher to the Webhook helm release. That means we can update the Webhook chart to support private registry secrets without the need to have additional rancher/rancher updates.

[samjustus]

moving to backlog (unscheduled)

[sravanakinapally]

How can we use a private registry for rancher-webhook?