Call API when removing route's finalizer (#5715)
Call API when removing route's finalizer (#5715)

* Call API when removing route's finalizer

When Route object deleted the finalizer, we need to call API but we
are missing it. Due to it, old route which had the finalizer will not
removed by reconciler.

This patch fixes the issue to call API.

* Change the order of finalizer and deletion of Ingress

* Evaluate the finalizer only when at the head of the list

* Fix a comment ClusterIngress to Ingress

knative/serving,knative/serving