Merge pull request #17431 from msekletar/udev-link-update-race

udev: make algorithm that selects highest priority devlink less susceptible to race conditions

diff --cc src/basic/stat-util.c
Simple merge

diff --cc src/udev/udev-event.c
Simple merge

diff --cc src/udev/udev-node.c
Simple merge

diff --cc test/sys-script.py
Simple merge