fix: adding of duplicate commit statuses in gitlab

[mo-rieger]

The get commit-status request is paginated and only returns the first 20 commit statuses by default. This change fetches the commit-status by name to avoid multiple requests.

RESOLVES #1009

[matheuscscp]

@mo-rieger Can you please build an image, test this e2e and post some evidence that it works? Then I think we can approve and merge the PR. Thanks!

[mo-rieger]

Hi @matheuscscp, I built the image and replaced the notification-controller with my custom image.
The patch fixes the bug. The GitLab commit statuses get updated but the GitLab Jobs did not increase over time like it was the case before.

Do you need anything else?

[stefanprodan]

Thanks @mo-rieger for testing this end-to-end 🥇 I expected for GitLab to error out when the commit status doesn't exists, but I guess they just return an empty list so the first time an event is issued, NC will create the status.

[matheuscscp]

Thanks very much for this contribution, @mo-rieger!

[mo-rieger]

I expected for GitLab to error out when the commit status doesn't exists, but I guess they just return an empty list so the first time an event is issued, NC will create the status.

Exactly, it's always 200 with an empty list if no commit status exist.

Thanks for merging!