Fix random fail on rally-ci cli tests
Fix random fail on rally-ci cli tests

To see what we will get randomly on any patch please go to
http://r-ci.tk/logs/zXqaxKhryL/rally-dsvm-pg-py34-cli/console.log

Change-Id: If03cc65770e4aaddb04210a35ae8f17c825657fb

openstack/rally,openstack/rally,eonpatapon/rally,gluke77/rally,eayunstack/rally,yeming233/rally,vganapath/rally,openstack/rally,gluke77/rally,openstack/rally,eayunstack/rally,gluke77/rally,yeming233/rally,vganapath/rally,vganapath/rally,gluke77/rally,eayunstack/rally,vganapath/rally,eonpatapon/rally