logrotate fails on rotating some logs, citing 'insecure permissions' on parent directory

Issue

• logrotate fails to rotate some logs, displaying with the following error (in this example, nova logs could not be rotated):

error: skipping "/var/log/nova/nova-api.log" because parent directory has insecure permissions (It's world writable or writable by group which is not "root") Set "su" directive in config file to tell logrotate which user/group should be used for rotation.

• This can cause the root partition of the Director node to fill up, and can impact performance