tsan: ignore some errors in the clone_setns test

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https://lab.llvm.org/buildbot/#/builders/70/builds/14101

Look only for the target EINVAL error.

Differential Revision: https://reviews.llvm.org/D113759

GitOrigin-RevId: 19c1d03f97188206c96a5a54bbe4a8b5a9643d27
1 file changed