Faulty plugin test fails in CMAKE_BUILD_TYPE=Coverage

[osrf-migration]

Original report (archived issue) by Michael Carroll (Bitbucket: Michael Carroll, GitHub: mjcarroll).

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The integration test added to verify the behavior of backward-cpp stacktrace functionality fails when building in Coverage mode (impacting Bitbucket pipelines).

I can reproduce this locally as well where the test fails with a SIGABRT rather than a SIGSEGV as expected.

@azeey believes that it may be related to _gcov_flush not getting called correctly in the child process.

For now, the test is disabled when Coverage is used, but it would be nice to have it on for pipelines.