This includes read-only buffers.

The code split between bytes and numpy array is removed and all objects
are now handled equally.

Furthermore, it seems to be more correct to increase the ref count for
None objects as well, while a pointer to that object is used.

Enable test of receiver with kafka. Add sleep of 3 sec after start of kafka listener to ensure that is it ready

Add components to run standalone asapo service inside of build_env container. This should help to run integration tests.