linuxbridge check.sh not right

linuxbridge check.sh script got wrong
value of status.

Change-Id: I975562a62c9ebf7afc22289dc96e672ed877537c
Closes-Bug: #1452626

docker/neutron/neutron-agents/check-scripts/check-linuxbridge-agent.sh

@@ -2,7 +2,7 @@
 
 RES=0
 
-check=$(/usr/bin/neutron agent-list | awk '/ Linux / {print $9}')
+check=$(/usr/bin/neutron agent-list | awk '/ Linux / {print $10}')
 error="ERROR: Neutron Linux Bridge agent is not alive."
 
 if [[ $check != ":-)" ]]; then