Add missing mappings of module to serialized config

Signed-off-by: Kai-Uwe Hermann <kai-uwe.hermann@pionix.de>

src/manager.cpp

@@ -356,6 +356,7 @@ static std::map<pid_t, std::string> start_modules(ManagerConfig& config, MQTTAbs
         const std::string module_name = module.key();
         json serialized_mod_config = serialized_config;
         serialized_mod_config["module_config"] = json::object();
+        // add mappings of fulfillments
         serialized_mod_config["module_config"][module_name] = serialized_config.at("main").at(module_name);
         const auto fulfillments = config.get_fulfillments(module_name);
         serialized_mod_config["mappings"] = json::object();
@@ -367,6 +368,11 @@ static std::map<pid_t, std::string> start_modules(ManagerConfig& config, MQTTAbs
                 }
             }
         }
+        // also add mappings of module
+        const auto mappings = config.get_module_3_tier_model_mappings(module_name);
+        if (mappings.has_value()) {
+            serialized_mod_config["mappings"][module_name] = mappings.value();
+        }
         serialized_mod_config.erase("main"); // FIXME: do not put this "main" config in there in the first place
         const auto telemetry_config = config.get_telemetry_config(module_name);
         if (telemetry_config.has_value()) {