Support injection pem into an existing configmap about trust-manager HOT 5 OPEN

I like this idea and would love to see it implemented. Suggesting a small adjustment to the proposed API:

spec:
  target:
    configMapSelector:
      my-label-key: my-label-value

The type of the selector should be map[string]string as any other Kubernetes label selector.

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/good-first-issue

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I have a suggestion to the UX here, which I think can increase the usability/flexibility. What do you think of just having a well-known annotation/label key that you could add to any configmap or secret. Assuming the name of the trust-manager Bundle is my-ca-bundle, this could be as easy as:

apiVersion: v1
kind: ConfigMap
metadata:
  labels:
    trust.cert-manager.io/inject-bundle: my-ca-bundle
  name: ca-inject 
  namespace: apache

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I would like to see this feature implemented, and I think I know how it could be done.

/assign

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