Remove the checksum fills

The checksum fill was created a long time ago in a cloud far far away.
Checksums on the lxc bridge were needed back in the days when Icehouse
was a popular band and Juno was a funny movie. These tasks are no longer
required and should be removed as they do nothing but spam DMESG with
kernel stacktraces and nothing about that is cute or funny.

Change-Id: I2242725682056491106ab8012ad1fa9d0e7f9ecd
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

templates/lxc-system-manage.j2

@@ -66,17 +66,6 @@ function remove_rules {
                                   -d "${LXC_NETWORK}" \
                                   -j MASQUERADE || true
 
-    # Remove rules from the mangle POSTROUTING chain
-    iptables ${USE_IPTABLES_LOCK} -t mangle \
-                                  -D POSTROUTING \
-                                  -s "${LXC_NETWORK}" \
-                                  -o "${LXC_BRIDGE}" \
-                                  -p udp \
-                                  -m udp \
-                                  --dport 68 \
-                                  -j CHECKSUM \
-                                  --checksum-fill
-
     if [ "$LXC_IPV6_NAT" = "true" ]; then
         ip6tables ${USE_IPTABLES_LOCK} -t nat -D POSTROUTING -s ${LXC_IPV6_NETWORK} ! -d ${LXC_IPV6_NETWORK} -j MASQUERADE
     fi
@@ -118,16 +107,6 @@ function add_rules {
                                   -d "${LXC_NETWORK}" \
                                   -j MASQUERADE
 
-    # Add rules to the mangle POSTROUTING chain
-    iptables ${USE_IPTABLES_LOCK} -t mangle \
-                                  -A POSTROUTING \
-                                  -s "${LXC_NETWORK}" \
-                                  -o "${LXC_BRIDGE}" \
-                                  -p udp \
-                                  -m udp \
-                                  --dport 68 \
-                                  -j CHECKSUM \
-                                  --checksum-fill
     success "LXC IPtables rules created."
 }