Comment 1 for bug 1354756

Seen also in http://logs.openstack.org/13/118813/3/check/check-grenade-dsvm/8677ca1/logs/

2014-09-10 07:32:24.722 | Expected running services not running: ,n-net
2014-09-10 07:32:24.723 | + die 348 'Failure in check-sanity'
2014-09-10 07:32:24.723 | + local exitcode=1
2014-09-10 07:32:24.723 | [Call Trace]
2014-09-10 07:32:24.723 | ./grenade.sh:348:die
2014-09-10 07:32:24.726 | [ERROR] ./grenade.sh:348 Failure in check-sanity
2014-09-10 07:32:24.726 | /opt/stack/new/grenade/functions: line 133: /opt/stack/logs/screen/error.log: Permission denied
2014-09-10 07:32:24.726 | Exit code: 1
2014-09-10 07:32:24.750 | World dumping... see /opt/stack/logs/worlddump-2014-09-10-073224.txt for details