Files
kubernetes/pkg
Kubernetes Submit Queue a8968810fd Merge pull request #47380 from kevin-wangzefeng/pod-tolerations-with-no-value
Automatic merge from submit-queue

hide operator when describe pod with empty value tolerations

**What this PR does / why we need it**:
The tolerations printing in `kubectl descirbe pod` is not correct when toleration.value is empty, this PR is to fix it.

Before: 
```
Tolerations:	node.alpha.kubernetes.io/notReady=:Exists:NoExecute for 300s
		node.alpha.kubernetes.io/unreachable=:Exists:NoExecute for 300s
```
After:
```
Tolerations:	node.alpha.kubernetes.io/notReady:NoExecute for 300s
		node.alpha.kubernetes.io/unreachable:NoExecute for 300s
```

Also updated tests to cover all possible cases of describing pod with tolerations. See changes in of `TestDescribePodTolerations()` in `describe_test.go`

**Which issue this PR fixes**:

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
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