When generating sub-tasks, if we appear to be setting timeouts greater than a certain threshold, we will fail the task generation. This is to inform the patch builder that they are trying to run a patch build that will take a really long time. We require them to manually disable the check if that is something they are sure they want to do.

On mainline builds, however, we should skip this check since there is no one to go manually override it and some of the repeated-execution tests are bumping up against it.