hooks: Remove sudo use from ethtool_options hooks

This hook is running from supevdsm context therefore runs as root.

Change-Id: I3f1529452050370c82eb2a2675b74c2e5136d427
Signed-off-by: Dima Kuznetsov <dkuznets@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/35725
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Tested-by: Dan Kenigsberg <danken@redhat.com>