Adding demo cell.

Change-Id: I6a71e2b4516d4c7f2a2e76e000cdf46b78cad541
diff --git a/tools/test/cells/demo b/tools/test/cells/demo
new file mode 100644
index 0000000..bb765bb
--- /dev/null
+++ b/tools/test/cells/demo
@@ -0,0 +1,12 @@
+# LXC demo environment for oneping tutorial
+
+export ONOS_NIC="10.0.3.*"
+export OC1="10.0.3.101"
+export OC2="10.0.3.102"
+export OC3="10.0.3.103"
+export OCN="10.0.3.1"
+
+unset ONOS_USE_SSH
+export ONOS_APPS=drivers,openflow,proxyarp
+
+alias sshnet="ssh onos@$OCN"