25-add-cron-jobs.sh change for version fw 3

[dr-boss]

unifios-utilities/on-boot-script-2.x/examples/udm-files/on_boot.d/25-add-cron-jobs.sh

Line 23 in 0874c3f

/etc/init.d/crond restart

for version 3 replace line:
/etc/init.d/crond restart
with
systemctl restart cron

[xrh0905]

Yep works for me.