adapt for system tests

Author: anna-git

test/system-tests/main.cpp

@@ -78,6 +78,7 @@ int main(int argc, char* argv[]) {
   config.logger = logger;
   config.agent.event_scheduler = event_scheduler;
   config.name = "http.request";
+  config.service = "service-set-from-code";
 
   auto finalized_config = datadog::tracing::finalize_config(config);
   if (auto error = finalized_config.if_error()) {