Raise Event on Certificate Invalidity

[arielsepton]

Description:

Currently, the certificate-operator manages the lifecycle of certificates, but it does not raise events when a certificate becomes invalid. This information can be valuable for end-users to track the status of certificates and take appropriate actions.

Tasks:

• Implement logic to raise an event when a certificate is detected as invalid.
• Define Event Metadata:
  • Define the metadata for the event, including the type, reason, and message, to accurately convey the invalidity of the certificate.
• Test and Verify:
  • Write unit tests to ensure that the event is raised correctly when a certificate is invalid.

Expected Outcome:

The certificate-operator should raise an event with appropriate metadata whenever a certificate is marked as invalid.
Users should be able to view the events using kubectl get events and gain insights into the status of certificates managed by the operator.