CVE-2015-7703 configuration directives 'pidfile' and
'driftfile' should only be allowed locally
CVE-2015-7704, CVE-2015-7705 Clients that receive a KoD should
validate the origin timestamp field
CVE-2015-7691, CVE-2015-7692, CVE-2015-7702 Incomplete autokey
data packet length checks
Use ntpq instead of deprecated ntpdc in start-ntpd (bnc#936327).
Add a controlkey to ntp.conf to make the above work.
Improve runtime configuration:
Read keytype from ntp.conf
Don't write ntp keys to syslog.
Don't let 'keysdir' lines in ntp.conf trigger the 'keys' parser.
Fix the comment regarding addserver in ntp.conf (bnc#910063).
Remove ntp.1.gz, it wasn't installed anymore.
Remove ntp-4.2.7-rh-manpages.tar.gz and only keep ntptime.8.gz.
The rest is partially irrelevant, partially redundant and
potentially outdated (bsc#942587).
Remove 'kod' from the restrict line in ntp.conf (bsc#944300).
Use SHA1 instead of MD5 for symmetric keys (bsc#905885).
Require perl-Socket6 (bsc#942441).
Fix incomplete backporting of 'rcntp ntptimemset'.