Automatic merge from submit-queue

Change timeout for ExecSync, RunPodSandbox and PullImage.

For https://github.com/kubernetes/kubernetes/issues/41225.

This PR:
* Change `ExecSync` to respect passed-in timeout.
* Double `RunPodSandbox` timeout.
* Remove `PullImage` timeout.

/cc @yujuhong @timstclair @feiskyer @freehan @kubernetes/sig-node-bugs