The combination of these unstable tests makes it very
hard to get changes through the CI system due to the
unrelated test failures.
Skip the following test functions:
tst_QIODevice::unget QTBUG-39983 (Mac)
tst_QThreadPool:expiryTimeoutRace QTBUG-3786 (Windows)
tst_QLocalSocket::processConnection QTBUG-39986 (Mac)
tst_QTcpServer::adressReusable QTBUG-39985 (Linux)
Change-Id: I96559bea0d437fd25966b6ccac1ece1490e06241
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>