Recommended update for permissions

This update for permissions fixes the following issues:

- Change pinger owner to squid:root instead of root:squid, as there is no squid group.
(boo#961363)
- Add missing "/" to the squid specific directories. (boo#950557)
This update was imported from the SUSE:SLE-12:Update update project.

Fixed bugs
bnc#961363
squid: pinger: icmp_sock: (1) Operation not permitted
bnc#950557
AUDIT-0: permissions-dir-without-slash for squid-3.5.10 in Leap
Selected Binaries
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