add test SCHED0023 to check that round robin threads are indeed scheduled round robin.
print thread id in periodic thread tests
The test relies on relative timing of a busy wait loop. The loop has to take at least 1 ms so that the round-robin test thread is preempted at least once before it prints+increments again.
The test relies on relative timing of a busy wait loop. The loop has to take at least 1 ms so that the round-robin test thread is preempted at least once before it prints+increments again.