Finalized configuration processing cleanup

All parts of the configuration processing are now in their own functions.
This allows new objects to be created after MaxScale has started.

server/core/dbusers.c

@@ -2583,7 +2583,7 @@ bool check_service_permissions(SERVICE* service)
     int conn_timeout = 1;
     bool rval = true;
 
-    if (isInternalService(service->routerModule))
+    if (is_internal_service(service->routerModule))
     {
         return true;
     }