added test for two streams

...ples/producer/dummy-data-producer/dummy_data_producer.cpp

examples/worker/getnext_broker/getnext_broker.cpp

tests/automatic/full_chain/CMakeLists.txt

tests/automatic/full_chain/two_streams/CMakeLists.txt

tests/automatic/full_chain/two_streams/check_linux.sh

tests/automatic/full_chain/two_streams/check_windows.bat