👩‍🌾 SrvTwoProcs test flaky on macOS for ign-transport8

[chapulina]

The test has failed 2/14 latest builds:

https://build.osrfoundation.org/job/ignition_transport-ci-ign-transport8-homebrew-amd64/27/testReport/(root)/twoProcSrvCallSync1/SrvTwoProcs/history/

It hasn't been failing for ign-transport7 though:

https://build.osrfoundation.org/job/ignition_transport-ci-ign-transport7-homebrew-amd64/43/testReport/(root)/twoProcSrvCallSync1/SrvTwoProcs/history/

Failure log:

/Users/jenkins/workspace/ignition_transport-ci-ign-transport8-homebrew-amd64/ign-transport/test/integration/twoProcsSrvCallSync1.cc:59
Value of: node.Request(g_topic, req, static_cast<unsigned int>(timeout), rep, result)
  Actual: false
Expected: true

[chapulina]

The last time this test failed was 1.5 years ago. I'm going to close this issue and make the Homebrew check required for ign-transport8 again, see

• Make CI checks required gazebo-tooling/release-tools#398