Test AsyncIntermediateCatchSignalTest.testCorrectProcessStateAfterExceptionSignalCommandMulti fails randomly

Test testCorrectProcessStateAfterExceptionSignalCommandMulti uses a process listener that checks if a process completed. The test starts 5 processes but sometimes it happens that the afterProcessCompleted method is executed just 4 times.

I will provide a PR with for this with modified test. It is needed because the test doesn't contain timeout and this blocks all downstream builds currently (the test hangs indefinitely).