- update to 4.1.6
- Revert "rec: Authority records in AA=1 CNAME answer are
authoritative"
https://github.com/PowerDNS/pdns/issues/7158

- update to 4.1.5
- Improvements
* Add pdnslog to lua configuration scripts
* Fix compilation with libressl 2.7.0+
* Export outgoing ECS value and server ID in protobuf (if any)
* Switch to devtoolset 7 for el6
* Allow the signature inception to be off by number of seconds
- Bug Fixes
* Crafted answer can cause a denial of service
(bsc#1114157, CVE-2018-10851)
* Packet cache pollution via crafted query
(bsc#1114169, CVE-2018-14626)
* Crafted query for meta-types can cause a denial of service
(bsc#1114170, CVE-2018-14644)
* Delay creation of rpz threads until we dropped privileges
* Cleanup the netmask trees used for the ecs index on removals
* Make sure that the ecs scope from the auth is < to the source
* Authority records in aa=1 cname answer are authoritative
* Avoid a memory leak in catch-all exception handler
* Don’t require authoritative answers for forward-recurse zones
* Release memory in case of error in openssl ecdsa constructor
* Convert a few uses to toLogString to print DNSName’s that
may be empty in a safer manner
* Avoid a crash on DEC Alpha systems
* Clear all caches on (N)TA changes