Introducing "unit.log.Log" class for "unit.log" file management.
Moving "findall()" function into TestApplicationProto.
Using "os.kill()" to send signals.
ASGI threads read all the requests from the queue before start processing it.
This why test need to wait a little to let the ASGI thread start request
processing and block. In virtual environment any thread or process may
be delayed and only method to avoid racing is a reasonable sleep increase.