--trace logging with more details about trust anchors, plus ttl of auth data

[ahupowerdns]

Print more details of trust anchors. In addition, the --trace output that mentions if data from authoritative servers gets accepted now also prints the TTL and clarifies the 'place' number previously printed.

Short description

Checklist

I have:

• read the CONTRIBUTING.md document
• compiled and tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)
• checked that this code was merged to master

[pieterlexis]

Maybe we should have a static vector for the names of the places (like vState and vStates) so we can show an actual name?

.... <<DNSPacketSections[rec.d_place]<<....

[ahupowerdns]

I'm actually hoping for a slightly more generic solution. I know there are classes out there that create fast and simple mapping between enums and names. We have this issue for QType, RCode, validation states, record places, opcodes etc. https://stackoverflow.com/questions/28828957/enum-to-string-in-modern-c11-c14-and-future-c17-c20 has some discussion.

[pieterlexis]

alright, let's make that an item for the 4.2 or 4.3 timeframe