Added heartbeat thread to run_scenario.
Added heartbeat thread to run_scenario.
mtconnect/cppagent,Ghost-script/cppagent,mtconnect/cppagent,mtconnect/cppagent,Ghost-script/cppagent,mtconnect/cppagent,mtconnect/cppagent,mtconnect/cppagent,Ghost-script/cppagent,Ghost-script/cppagent,Ghost-script/cppagent