build: fix GCC compilation error because of call of deprecated function `siginterrupt`

Error message:

> main_eventmon.cpp:109:17: error: ‘int siginterrupt(int, int)’ is deprecated: Use sigaction with SA_RESTART instead [-Werror=deprecated-declarations]

The current fix consists in ignoring the error message at the moment,
but we should replace `siginterrupt` with `sigaction` in the future.

producer/event_monitor_producer/src/main_eventmon.cpp

@@ -105,7 +105,9 @@ int main (int argc, char* argv[]) {
     stop_signal = 0;
     std::signal(SIGINT, SignalHandler);
     std::signal(SIGTERM, SignalHandler);
-#if defined(__linux__) || defined (__APPLE__)
+#if defined(__linux__) || defined(__APPLE__)
+    // FIXME
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
     siginterrupt(SIGINT, 1);
 #endif