testsuite: Mark tests fragile in threaded2 as fragile in all concurrent ways
It used to be that threaded2 was the only testsuite way using -N > 2 that was routinely run. However, with the addition of nonmoving_thr this is no longer the case.
It used to be that threaded2 was the only testsuite way using -N > 2 that was routinely run. However, with the addition of nonmoving_thr this is no longer the case.