Fix rootwrap behavior in folsom.2

Folsom.2 changes rootwrap behavior, this adds
the new rootwrap.conf file, and adds the nova.conf
parameter needed to configure it.
It doesn't remove the rootwrap_helper parameter that
will go away in Folsom.3

Tracked with bug https://bugs.launchpad.net/openstack-cisco/+bug/1130549
Add sudoers permissions

Need to add sudo permissions for rootwrap
Remove '-e' from echo command
Ensure proper protection of /etc/nova directory

Make user nova, group root, no world access
Fix permissions

User needs to be able to read: root.nova 750
rootwrap sudoers is packaged

Don't need to update the sudoers file, it is included
in the nova-common package
Adjust nova.conf permissions

File is owned by root, and quantum group can only read
Update permissions for log files

Fixes issue where api and cert logs can not be created.
Merge pull request #6 from robertstarmer/folsom

Fix rootwrap behavior in folsom.2 bug:1130549