Fix typo in _move_neutron_addresses_route()

A previous change in this code had a typo, reversing the
definitions of IP_ADD and IP_DEL, noticed while debugging
another issue.

Change-Id: Ifb87de1138eeb72081a2e52a5c81bfe9fe91ecd6

Author: Brian Haley

lib/neutron-legacy

@@ -826,11 +826,11 @@ function _move_neutron_addresses_route {
         fi
 
         if [[ "$IP_BRD" != "" ]]; then
-            IP_ADD="sudo ip addr del $IP_BRD dev $from_intf"
-            IP_DEL="sudo ip addr add $IP_BRD dev $to_intf"
+            IP_DEL="sudo ip addr del $IP_BRD dev $from_intf"
+            IP_ADD="sudo ip addr add $IP_BRD dev $to_intf"
         fi
 
-        $IP_ADD; $IP_DEL; $ADD_OVS_PORT; $ADD_DEFAULT_ROUTE
+        $IP_DEL; $IP_ADD; $ADD_OVS_PORT; $ADD_DEFAULT_ROUTE
     fi
 }