Add ovs-ofctl to the sudo command list

Change-Id: I0a7de0fb80aeb71b1ab67fd64e95376d2aa2afa6
diff --git a/files/sudo/nova b/files/sudo/nova
index bde1519..3231e2d 100644
--- a/files/sudo/nova
+++ b/files/sudo/nova
@@ -42,6 +42,7 @@
                       /sbin/parted,                             \
                       /usr/sbin/dnsmasq,                        \
                       /usr/bin/ovs-vsctl,                       \
+                      /usr/bin/ovs-ofctl,                       \
                       /usr/sbin/arping
 
 %USER% ALL = (root) NOPASSWD: SETENV: NOVADEVCMDS