Change default path of ubus.sock
OpenWrt developers in upcoming version of OpenWrt 21.02 and newer decided that the will run ubusd as non-root user and because of that, they moved it from /var/run/ubus.sock to /var/run/ubus/ubus.sock
Related to this: https://github.com/openwrt/openwrt/commit/2dffadece9a7243a236ce7d91719787a671e23d4#diff-9536a91ee901a062b8e38e62fe624247e76fa4c268c9be6ba68af284ff0f641e
Edited by Martin Matějek