
Automatic merge from submit-queue Scheduledjob api @erictune ScheduledJob api types, based on #21675, so only last two commits counts. @sdminonne fyi ```release-note Introducing ScheduledJobs as described in [the proposal](https://github.com/kubernetes/kubernetes/blob/master/docs/proposals/scheduledjob.md) as part of `batch/v2alpha1` version (experimental feature). ``` []()