uslugi_knoss_man: backends_man#rtc_balancer_uslugi_yandex_ru_man
uslugi_knoss_sas: backends_sas#rtc_balancer_uslugi_yandex_ru_sas
uslugi_knoss_vla: backends_vla#rtc_balancer_uslugi_yandex_ru_vla
