add timestamp at inserting record to database

common/cpp/include/common/data_structs.h

common/cpp/src/data_structs/data_structs.cpp

common/cpp/src/system_io/system_io.cpp

common/cpp/src/system_io/system_io_linux_mac.cpp

common/cpp/unittests/data_structs/test_data_structs.cpp

consumer/api/cpp/unittests/test_server_broker.cpp

examples/consumer/getnext_broker/check_linux.sh

examples/consumer/getnext_broker/check_windows.bat

examples/consumer/getnext_broker_python/check_linux.sh

examples/consumer/getnext_broker_python/check_windows.bat

examples/pipeline/in_to_out/check_linux.sh

examples/pipeline/in_to_out/check_windows.bat

examples/pipeline/in_to_out_python/check_linux.sh

examples/pipeline/in_to_out_python/check_windows.bat

receiver/src/request_handler/request_handler_db_write.cpp

...ttests/request_handler/test_request_handler_db_writer.cpp

...utomatic/bug_fixes/consumer_python_memleak/check_linux.sh

tests/automatic/consumer/consumer_api/check_linux.sh

tests/automatic/consumer/consumer_api/check_windows.bat

tests/automatic/consumer/consumer_api_python/check_linux.sh