Automatic merge from submit-queue
A pod never terminated if a container image registry was unavailable
Fixes https://github.com/kubernetes/kubernetes/issues/23742
Fixes https://github.com/kubernetes/kubernetes/issues/22045
Pods will now show proper status when this happens as well:
```
$ cluster/kubectl.sh get pods --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
test foo-4072956304-1g8qs 0/1 RegistryUnavailable 0 7s
test foo-4072956304-i045g 0/1 RegistryUnavailable 0 7s
test foo-4072956304-qem2n 0/1 RegistryUnavailable 0 7s
```
Where as previously they would never report a reason.
I also removed the "temporary" part of the message because we have no idea if its temporary or permanent.
/cc @kubernetes/sig-node @kubernetes/rh-cluster-infra
224684c4bc