Ensure --successrate applies to all test tasks consistently #13
Description
Currently the --successrate option seems to only be applied to a few test tasks such as timed_adhoc_task and another_timed_adhoc_task
Ideally, it would be good if this was applied to all test tasks, as I ran this option with a successrate=0 for a 2 second task, only to see it pass when I expected it to fail.
-s --successrate=n Success rate the test tasks from 0-100
The README could also be updated to suggest which fields apply for which tasks or something of that nature.