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/sudocmdgroup/ensure-sudocmdgroup-is-present.yml

@@ -4,8 +4,8 @@
   become: true
 
   tasks:
-  # Ensure sudocmdgroup sudocmds are present
-  - ipasudocmdgroup:
+  - name: Ensure sudocmdgroup sudocmds are present
+    ipasudocmdgroup:
       ipaadmin_password: pass1234
       name: network
       description: Group of important commands.