Automatic merge from submit-queue (batch tested with PRs 63283, 64032, 64159, 64126, 64098). 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>.

Fix running e2e tests with completed kube-system pods

As per @timothysc's suggestion, this PR is the same as PR #53222, but with the CLA signed and with a comment explaining why completed pods are skipped.  Credit for finding this fix goes to @dlosev.

From the original PR:

> Currently e2e runner fails during BeforeSuite execution if there are pods in kube-system namespace in 'Completed' state.
>
> Exactly this issue was fixed previously in #37325 by adding new option "skipSucceeded" to ignore 'Completed' pods. Then, in 2e3cd93f#diff-eb7b79470992813ea1905e96c298b47bL557 that option was removed and code was adjusted to ignore 'Completed' pods all the time. But in 0bf96a3c that code was accidentally removed as redundant.
>
> This fix restores removed code.

```release-note
NONE
```