test,benchmark: enable minimal CI for http bench
Enable minimal CI testing for http benchmarks. This required making the duration of some benchmarks configurable. They had been defaulting to 10 seconds each.
Checklist
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make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
commit message follows commit guidelines
Affected core subsystem(s)
test benchmark