updated to support the enlisting of compute nodes into juju and XOS when they come on line

Change-Id: I2b1d51414a7e22b9709ea5f534ddef622e008a32
diff --git a/vars/cord.yml b/vars/cord.yml
index 65b7f4a..036b59d 100644
--- a/vars/cord.yml
+++ b/vars/cord.yml
@@ -47,3 +47,6 @@
 
 # turn this on, or override when running playbook with --extra-vars="on_cloudlab=True"
 on_cloudlab: False
+
+# turn this off, or override when running playbook with --extra-vars="on_maas=False"
+on_maas: True