CORD-1116 Update neutron-api charm to fix ONOS ML2 driver

Change-Id: I6f64e1eee336a8457106c4e8f0a788d0f1b67a09
diff --git a/vars/opencloud_defaults.yml b/vars/opencloud_defaults.yml
index bc16f70..91a85a7 100644
--- a/vars/opencloud_defaults.yml
+++ b/vars/opencloud_defaults.yml
@@ -39,7 +39,7 @@
   - deb.nodesource.com
 
 charm_versions:
-  neutron-api: "cs:~cordteam/trusty/neutron-api-3"
+  neutron-api: "cs:~cordteam/trusty/neutron-api-5"
   nova-compute: "cs:~cordteam/trusty/nova-compute-2"
 
 head_vm_list: