Bug 965970 - Fix permissions on /var/named

https://bugzilla.redhat.com/show_bug.cgi?id=965970

/var/named should be owned by root to prevent AVC denials on bind
restart

Fix requires on dynamic zone, should be /var/named/dynamic and not
/var/named
Merge pull request #64 from detiber/bz965970

Bug 965970 - Fix permissions on /var/named