Merge pull request #30 in ASAPO/asapo from bugfix_pcu to develop

common/cpp/src/system_io/system_io_linux.cpp

receiver/src/receiver.cpp

receiver/src/receiver.h

tests/automatic/CMakeLists.txt

tests/automatic/bug_fixes/CMakeLists.txt

...atic/bug_fixes/producer_send_after_restart/CMakeLists.txt

...atic/bug_fixes/producer_send_after_restart/check_linux.sh

...c/bug_fixes/producer_send_after_restart/check_windows.bat

...omatic/bug_fixes/producer_send_after_restart/test.json.in

tests/automatic/bug_fixes/receiver_cpu_usage/CMakeLists.txt

tests/automatic/bug_fixes/receiver_cpu_usage/check_linux.sh

tests/automatic/bug_fixes/receiver_cpu_usage/test.json.in

tests/automatic/settings/discovery_fixed_settings.json