Change var name: cord_provisioned -> on_maas

Change-Id: I046224d3e3297e551f596509367ac39a65fa7fb1
diff --git a/roles/compute-prep/tasks/main.yml b/roles/compute-prep/tasks/main.yml
index 0c57979..1ddee39 100644
--- a/roles/compute-prep/tasks/main.yml
+++ b/roles/compute-prep/tasks/main.yml
@@ -32,7 +32,7 @@
     mode=0755
   notify:
     - run rc.local
-  when: not cord_provisioned
+  when: not on_maas
 
 - name: Create /var/lib/nova dir
   file: