test: fix http-client-timeout-option-listeners
Checklist
-
make -j4 test
(UNIX), orvcbuild test nosign
(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
test http
Description of change
test-http-client-timeout-option-listeners is flaky due to depending on completing operations before a 100ms socket timeout. The socket timeout is an integral part of the test. Load on the machine can affect the test, so move it to sequential.