[CORD-2453] Remove the old TOSCA engine (and obsolete roles/playbooks)

Change-Id: I769303b5ddfa6e2a6ffd5bcc08e6e7f3285e7bba
diff --git a/pod-test-playbook.yml b/pod-test-playbook.yml
index 5d5ad15..2561001 100644
--- a/pod-test-playbook.yml
+++ b/pod-test-playbook.yml
@@ -29,11 +29,8 @@
   roles:
     - test-subscriber-config
 
-- include: add-onboard-containers-playbook.yml
-
 - name: Enable the test subscriber
-  hosts: xos_ui
-  connection: docker
+  hosts: head
   roles:
     - test-subscriber-enable