Generate a coverage report for End to end tests (#5667)

* Generate coverage report after running tests

* Wait for integration program to stop/start

src/modules/AdminModule.cpp

@@ -358,7 +358,7 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
 #ifdef ARCH_PORTDUINO
     case meshtastic_AdminMessage_exit_simulator_tag:
         LOG_INFO("Exiting simulator");
-        _exit(0);
+        exit(0);
         break;
 #endif