auth lua records: new option to set the http status code to match in ifurlup function

[miodvallat]

Short description

This supersedes #10431. Sorry for the mess.

Checklist

I have:

• read the CONTRIBUTING.md document
• 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]

Pull Request Test Coverage Report for Build 13195327558

Details

• 0 of 9 (0.0%) changed or added relevant lines in 2 files are covered.
• 9106 unchanged lines in 98 files lost coverage.
• Overall coverage decreased (-0.02%) to 64.705%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pdns/minicurl.cc	0	2	0.0%
pdns/lua-record.cc	0	7	0.0%

Files with Coverage Reduction	New Missed Lines	%
pdns/packethandler.cc	1	72.8%
pdns/epollmplexer.cc	2	83.75%
ext/yahttp/yahttp/utility.hpp	2	36.69%
pdns/burtle.hh	2	98.16%
pdns/signingpipe.cc	2	85.79%
pdns/dnsdistdist/dnsdist-lua-bindings-dnsquestion.cc	2	46.55%
pdns/channel.hh	2	55.9%
pdns/libssl.hh	2	0.0%
pdns/dnsdistdist/dnsdist-lua-bindings-kvs.cc	2	48.0%
pdns/pollmplexer.cc	2	83.01%

Totals
Change from base Build 13177913388:	-0.02%
Covered Lines:	128258
Relevant Lines:	167094

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💛 - Coveralls