make max_duration_seconds mandatory
Created by: wizardofoz123
This is a followup for https://github.com/CKI-project/kpet/pull/67. This patch makes max_duration_seconds mandatory, so that we can implement scheduling later on. The related kpet-db MR was merged, so all tests have this and from now on, all new tests have to have this.
Signed-off-by: Jakub Racek jracek@redhat.com