Backport of Prevent kill_timeout greater than progress_deadline into release/1.5.x #17207
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Backport
This PR is auto-generated from #16761 to be assessed for backporting due to the inclusion of the label backport/1.5.x.
The below text is copied from the body of the original PR.
This PR addresses the bug reported on #8487
If a kill_timeout is greater than the job's progress_deadline, allocations may keep running (after initial kill signal) for long enough that the deploy fails. However, the allocations that were scheduled by that job will still be pending after job failure, and will be placed and started once the previous allocations do exit. This PR adds a validation to avoid this situation.