The Pod is eligible to preempt when previous nominanted node is UnschedulableAndUnresolvable

If the Pod's previous nominated node is UnschedulableAndUnresolvable from previous
filtering, it should be considered for preemption again.

pkg/scheduler/testing/wrappers.go

@@ -244,6 +244,12 @@ func (p *PodWrapper) StartTime(t metav1.Time) *PodWrapper {
 	return p
 }
 
+// NominatedNodeName sets `n` as the .Status.NominatedNodeName of the inner pod.
+func (p *PodWrapper) NominatedNodeName(n string) *PodWrapper {
+	p.Status.NominatedNodeName = n
+	return p
+}
+
 // PodAffinityKind represents different kinds of PodAffinity.
 type PodAffinityKind int