BlueGreen strategy results in successful finished event despite "Progressing" status

[donovanmuller]

Using an Argo Rollouts strategy of BlueGreen, a successful sh.keptn.event.staging.delivery.finished event will be delivered, despite the rollout still progressing:

$ kubectl argo rollouts get rollouts test-staging -n test-debug-1-staging
Name:            test-staging
Namespace:       test-debug-1-staging
Status:          ◌ Progressing
Message:         updated replicas are still becoming available
Strategy:        BlueGreen
Images:          test:1.x-SNAPSHOT-79a6d17-149 (stable, preview)
Replicas:
  Desired:       1
  Current:       1
  Updated:       1
  Ready:         0
  Available:     0

A successful .finished event should ideally only be sent once the rollout has completed rolling out or failed.