Revert to previous behavior in 1.21/1.20 of setting pod phase to failed
during graceful node shutdown.
Setting pods to failed phase will ensure that external controllers that
manage pods like deployments will create new pods to replace those that
are shutdown. Many customers have taken a dependency on this behavior
and it was breaking change in 1.22, so this change reverts back to the
previous behavior.
Signed-off-by: David Porter <david@porter.me>