Merge pull request #63757 from nak3/disruptedPods-optional

Automatic merge from submit-queue (batch tested with PRs 63757, 67698, 67712, 67494, 67700). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Make DisruptedPods in PodDisruptionBudgetStatus optional field

**What this PR does / why we need it**:

Please refer to kubernetes/kubernetes#63756

**Which issue(s) this PR fixes**

Fixes kubernetes/kubernetes#63756

**Release note**:

```release-note
NONE
```

Kubernetes-commit: e98bf0fb521ee7bb1ca3d1e7098169abc4b509bd

policy/v1beta1/types.go

@@ -60,7 +60,8 @@ type PodDisruptionBudgetStatus struct {
 	// the list automatically by PodDisruptionBudget controller after some time.
 	// If everything goes smooth this map should be empty for the most of the time.
 	// Large number of entries in the map may indicate problems with pod deletions.
-	DisruptedPods map[string]metav1.Time `json:"disruptedPods" protobuf:"bytes,2,rep,name=disruptedPods"`
+	// +optional
+	DisruptedPods map[string]metav1.Time `json:"disruptedPods,omitempty" protobuf:"bytes,2,rep,name=disruptedPods"`
 
 	// Number of pod disruptions that are currently allowed.
 	PodDisruptionsAllowed int32 `json:"disruptionsAllowed" protobuf:"varint,3,opt,name=disruptionsAllowed"`