Automatic merge from submit-queue (batch tested with PRs 42162, 41973, 42015, 42115, 41923)
Increase Min Timeout for kill pod
Should mitigate #41347, which describes flakes in the inode eviction test due to "GracePeriodExceeded" errors.
When we use gracePeriod == 0, as we do in eviction, the pod worker currently sets a timeout of 2 seconds to kill a pod.
We are hitting this timeout fairly often during eviction tests, causing extra pods to be evicted (since the eviction manager "fails" to evict that pod, and kills the next one).
This PR increases the timeout from 2 seconds to 4, although we could increase it even more if we think that would be appropriate.
cc @yujuhong @vishh @derekwaynecarr
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