vr: Fix vpc router in UNKNOWN state (#3465)

If there are more than 10 vpc tiers or public ip subnets in a VPC, eth1X will be added in vpc router.
The redundant state is UNKNOWN in this case.

Author: ustcweizhou

systemvm/debian/opt/cloud/bin/checkrouter.sh

@@ -27,10 +27,10 @@ fi
 ROUTER_TYPE=$(cat /etc/cloudstack/cmdline.json | grep type | awk '{print $2;}' | sed -e 's/[,\"]//g')
 if [ "$ROUTER_TYPE" = "router" ]
 then
-	ROUTER_STATE=$(ip addr | grep eth0 | grep inet | wc -l | xargs bash -c  'if [ $0 == 2 ]; then echo "MASTER"; else echo "BACKUP"; fi')
+	ROUTER_STATE=$(ip addr show dev eth0 | grep inet | wc -l | xargs bash -c  'if [ $0 == 2 ]; then echo "MASTER"; else echo "BACKUP"; fi')
 	STATUS=$ROUTER_STATE
 else
-	ROUTER_STATE=$(ip addr | grep eth1 | grep state | awk '{print $9;}')
+	ROUTER_STATE=$(ip addr show dev eth1 | grep state | awk '{print $9;}')
 	if [ "$ROUTER_STATE" = "UP" ]
 	then
 	    STATUS=MASTER