Retry to get logging configmap when failed (#1189)
Retry to get logging configmap when failed (#1189)

* Retry to get logging configmap when failed

When deploying pods with Istio sidecar, it takes a few seconds until
network is configured. In fact, Serving's system pods always fail when
Istio sidecar is enbled.

To fix it, this patch changes to retry to get logging configmap for 5
seconds.

* Add IsNotFound error check

* Remove if error condition
knative/pkg,knative/pkg