Improved timeout exception message
Corrected test names
Fixes for retry combined with unchecked jobs
 - don't reinvoke serial flow because of unchecked job failure, but still reinvoke unchecked jobs if flow is reinvoked for other resons
 - don't reinvoke unchecked jobs that are still running
 - unchecked jobs may be reinvoked as long as flow is still running for other reasons
 - reporting result multiple times fix