Update /var/lib/nova directory permissions

The /var/lib/nova directory is world readable.
This may lead to sensitive information leakage and cloud compromise.

Set /var/lib/nova directory permissions to 0750.
Add libvirt-qemu user to nova group.

Change-Id: Ie4c98d6e54fa75efe4fff482b275b97e368c13ee
Related-Prod: https://mirantis.jira.com/browse/PROD-22088
1 file changed