CORD-3118 Mount node key in ONOS container for VTN (optional)

Change-Id: I61fd1f94c59db0992e640167e4cc28325f7d8be0
diff --git a/xos-profiles/base-openstack/values.yaml b/xos-profiles/base-openstack/values.yaml
index 1a28a72..a56e377 100644
--- a/xos-profiles/base-openstack/values.yaml
+++ b/xos-profiles/base-openstack/values.yaml
@@ -37,6 +37,8 @@
 keystoneAdminTenant: "admin"
 keystoneDomain: "Default"
 
+nodeKeyFile: "files/node_key"
+
 # List of compute nodes to add to XOS
 computeNodes:
   master: