Fix ansible-lint error 502 (unnamed-task) for example playbooks.

This patch adds 'name' to all example playbook tasks that did not
have it, fixing ansible-lint's error 'unnamed-task'.

playbooks/sudocmd/ensure-sudocmd-is-absent.yml

@@ -4,8 +4,8 @@
   become: true
 
   tasks:
-  # Ensure sudo command is absent
-  - ipasudocmd:
+  - name: Ensure sudo command is absent
+    ipasudocmd:
       ipaadmin_password: SomeADMINpassword
       name: /usr/bin/su
       state: absent