bpo-30064: Fix unstable asyncio "racing" socket tests (GH-20485)


Skip new "racing" socket tests which fail randomly until someone fix
them, to ease analysis of buildbot failures (skip tests which are
known to be broken/unstable).
(cherry picked from commit 84ee7e1573d166fe7a9be676813e12523b62ab24)

Co-authored-by: Victor Stinner <vstinner@python.org>
1 file changed