Security Update for salt

Al Nikolov uploaded new package for salt which fixed the
following security problem:

CVE-2017-8109
The salt-ssh minion code in SaltStack Salt 2016.11 before 2016.11.4
copied over configuration from the Salt Master without adjusting
permissions, which might leak credentials to local attackers on
configured minions (clients).

For the jessie-backports distribution the problems have been fixed in
version 2016.11.2+ds-1~bpo8+2.