feat: Change gateway settings in NetworkManager

src/device/networkmanager.cpp

@@ -63,6 +63,7 @@ void NetworkManager::initNetworkInfo()
                     mIsDHCP = !entry.isPermanent();
                     mIpAddress = entry.ip().toString();
                     mSubNetMask = entry.netmask().toString();
+                    mGateway = JsonObject::Instance()->getDefaultIpAddr().gateway;
                     return;
                 }
             }