CLOUDSTACK-7028: Fixed adding route for additional public nic on fail over

(cherry picked from commit e336796cd5)

systemvm/patches/debian/config/etc/init.d/cloud-early-config

@@ -892,6 +892,9 @@ setup_aesni() {
 setup_router() {
   log_it "Setting up virtual router system vm"
 
+   #To save router public interface and gw ip information
+   touch /var/cache/cloud/ifaceGwIp
+
   oldmd5=
   [ -f "/etc/udev/rules.d/70-persistent-net.rules" ] && oldmd5=$(md5sum "/etc/udev/rules.d/70-persistent-net.rules" | awk '{print $1}')
   

systemvm/patches/debian/config/opt/cloud/bin/ipassoc.sh

@@ -230,6 +230,11 @@ add_first_ip() {
       sudo arping -c 1 -I $ethDev -A -U -s $ipNoMask $ipNoMask;
       sudo arping -c 1 -I $ethDev -A -U -s $ipNoMask $ipNoMask;
   fi
+
+  # add interface gateway ip info into file, used on redundant router fail over for adding routes
+  sed -i /"$ethDev "/d $IFACEGWIPFILE
+  echo "$ethDev $defaultGwIP" >> $IFACEGWIPFILE
+
   add_routing $1
 
   return 0
@@ -257,6 +262,7 @@ remove_first_ip() {
      sudo ip link set $ethDev down
      return 1
   fi
+  sed -i /"$ethDev "/d $IFACEGWIPFILE
   remove_routing $1
   sudo ip link set $ethDev down
   return $?
@@ -344,6 +350,7 @@ op=""
 is_master=0
 is_redundant=0
 if_keep_state=0
+IFACEGWIPFILE='/var/cache/cloud/ifaceGwIp'
 grep "redundant_router=1" /var/cache/cloud/cmdline > /dev/null
 if [ $? -eq 0 ]
 then

systemvm/patches/debian/config/root/redundant_router/enable_pubip.sh.templ

@@ -35,3 +35,16 @@ do
     fi
 done < /tmp/iflist
 ip route add default via [GATEWAY] dev eth2
+
+while read line
+do
+dev=$(echo $line | awk '{print $1'})
+gw=$(echo $line | awk '{print $2'})
+
+if [ "$dev" == "eth2" ]
+then
+    continue;
+fi
+ip route add default via $gw table Table_$dev proto static
+
+done < /var/cache/cloud/ifaceGwIp