KubeletCommand performs `start`, `restart`, or `stop` on the kubelet running on the node of the target pod and waits for the desired statues.

PodExec wraps RunKubectl to execute a bash cmd in target pod.

RunInPodWithVolume runs a command in a pod with given claim mounted to /mnt directory.

TestKubeletRestartsAndRestoresMount tests that a volume mounted to a pod remains mounted after a kubelet restarts.

TestVolumeUnmountsFromDeletedPod tests that a volume unmounts if the client pod was deleted while the kubelet was down.

TestVolumeUnmountsFromDeletedPod tests that a volume unmounts if the client pod was deleted while the kubelet was down.

TestVolumeUnmountsFromFoceDeletedPod tests that a volume unmounts if the client pod was forcefully deleted while the kubelet was down.

VerifyExecInPodFail verifies bash cmd in target pod fail with certain exit code.

VerifyExecInPodSucceed verifies bash cmd in target pod succeed.