Thank you for the review.
Test was moved to existing file. 
 
Среда, 18 декабря 2019, 0:56 +03:00 от Vladislav Shpilevoy <v.shpilevoy@tarantool.org>:
 
Hi! Thanks for the patch!
 
> diff --git a/test/box/load_cfg.test.lua b/test/box/load_cfg.test.lua
> new file mode 100644
> index 000000000..e0c3b361b
> --- /dev/null
> +++ b/test/box/load_cfg.test.lua

Please, move the test to box/cfg.test.lua.
 
 
--
Maria Khaydich