fix some test failures on Linux when running as root
fix some test failures on Linux when running as root

mindw/psutil,jamesblunt/psutil,mrjefftang/psutil,jorik041/psutil,jorik041/psutil,landryb/psutil,Q-Leap-Networks/psutil,jamesblunt/psutil,cloudbase/psutil,tomprince/psutil,mindw/psutil,mindw/psutil,tomprince/psutil,msarahan/psutil,qbit/psutil,tomprince/psutil,packages/psutil,msarahan/psutil,cloudbase/psutil,mrjefftang/psutil,tomprince/psutil,0-wiz-0/psutil,qbit/psutil,tomprince/psutil,jamesblunt/psutil,giampaolo/psutil,packages/psutil,mrjefftang/psutil,qbit/psutil,mindw/psutil,giampaolo/psutil,landryb/psutil,landryb/psutil,cloudbase/psutil,Q-Leap-Networks/psutil,0-wiz-0/psutil,landryb/psutil,msarahan/psutil,mindw/psutil,packages/psutil,jorik041/psutil,landryb/psutil