enforce maximum test runtime
Created by: wizardofoz123
This and complementary change in kpet-db implements FASTMOVING-777.
This adds optional Suite attribute 'max_runtime_minutes', which sets RSTRNT_MAX_TIME, which is the maximum amount of time the test is allowed to run. If it exceeds this amount of time, it is cancelled by restraint harness.
Signed-off-by: Jakub Racek jracek@redhat.com