adding a mininet vagrant box

Change-Id: I0c89c35a9e6768b3c3640c0895d405901e38799e
diff --git a/tools/test/cells/lxc b/tools/test/cells/lxc
index e04b899..e851733 100644
--- a/tools/test/cells/lxc
+++ b/tools/test/cells/lxc
@@ -2,9 +2,10 @@
 export OC1=10.100.198.201
 export OC2=10.100.198.202
 export OC3=10.100.198.203
+export OCN=10.100.198.100
 export ONOS_APPS=drivers,openflow,proxyarp
 export ONOS_NIC=10.100.198.*
-export ONOS_SCENARIOS=$HOME/work/onos-next/tools/test/scenarios
+export ONOS_SCENARIOS=$ONOS_ROOT/tools/test/scenarios
 export ONOS_USER=ubuntu
 export ONOS_GROUP=ubuntu
 export ONOS_WEB_PASS=rocks