SUSE-SU-2017:2659-1 Security update for krb5

This update for krb5 fixes several issues. This security issue was fixed: - CVE-2017-11462: Prevent automatic security context deletion to prevent double-free bsc1056995 These non-security issues were fixed: - Set 'rdns' and 'dnscanonicalizehostname' to false in krb5.conf in order to improve clie...