auth lmdb: correctly update timestamps in non-split domain table mode

[miodvallat]

Short description

This is on top of #17516, and adds a crude check which appears to pass CI now.

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document, including the AI Policy, and added a "Signed-off-by" to my commits
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[coveralls]

Coverage Report for CI Build 26956094536

Warning

Build has drifted: This PR's base is out of sync with its target branch, so coverage data may include unrelated changes.
Quick fix: rebase this PR. Learn more →

Coverage increased (+0.02%) to 71.085%

Details

• Coverage increased (+0.02%) from the base build.
• Patch coverage: 5 uncovered changes across 1 file (11 of 16 lines covered, 68.75%).
• 19 coverage regressions across 9 files.

Uncovered Changes

File	Changed	Covered	%
modules/lmdbbackend/lmdbbackend.cc	16	11	68.75%

Coverage Regressions

19 previously-covered lines in 9 files lost coverage.

File	Lines Losing Coverage	Coverage
pdns/recursordist/rec-tcpout.cc	5	79.05%
pdns/misc.cc	4	61.67%
pdns/auth-secondarycommunicator.cc	2	57.89%
pdns/recursordist/recpacketcache.cc	2	83.14%
pdns/recursordist/syncres.cc	2	81.22%
pdns/dnsdistdist/dnsdist-tcp.cc	1	74.49%
pdns/packethandler.cc	1	69.12%
pdns/recursordist/aggressive_nsec.cc	1	66.27%
pdns/signingpipe.cc	1	83.16%

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Coverage Stats

Relevant Lines:	170718
Covered Lines:	132967
Line Coverage:	77.89%
Relevant Branches:	81542
Covered Branches:	46352
Branch Coverage:	56.84%
Branches in Coverage %:	Yes
Coverage Strength:	6183350.03 hits per line

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💛 - Coveralls