DE#1191 - nova-manage command failed because of directory permission preventing the reading of nova.conf -- resolves nagios warning issues
modified directory block for /etc/nova to change permissions to 0755
Merge pull request #189 from jtwill98/pull-req-release-mesa-1.6-master-3db71170069a0d35fc2ebfd49f6acb971c481dc7

https://github.com/crowbar/barclamp-nova/pull/189

Merged by devtool for ArkadyKanevsky