Fix format for the null.yaml playbook (#93)

* Fix format for the null.yaml playbook

* remove redundant 'name' for "import_playbook"

Co-authored-by: Øystein Bedin <[email protected]>

Author: makirill

manage-participants/null.yml

@@ -8,4 +8,7 @@
 - import_playbook: completion_callback.yml
 
 - name: End Playbook
-  meta: end_play
+  gather_facts: false
+  hosts: localhost
+  tasks:
+    - meta: end_play