CI checks are run on on yaml manifests that are not part of cluster

[mimotej]

In following PR there was a change in .prow.yaml which should not trigger kustomize-build and kubeval-validation jobs. These jobs were triggered and it let to failure of these tests. We should try to address that.

Acceptance criteria

• kustomize-build and kubeval-validation are not triggered when changing files which are not part of the clusters or they end without failling

[durandom]

@mimotej if you have a quick fix, can you add it to to config? Maybe a path filter or something?
If not, I would not care too much, since changes to those yaml files rarely happen.

feel free to close it without a resolution :)

/assign @mimotej

[mimotej]

@durandom This was somewhat addressed in #2321 . I don't think there is a simple change in actual script to fix this and current change in prow seems to work just fine. So we can close this for now...