group: Use FQCN for ansible.builtin

Use Fully Qualified Collection Name (FQCN) for ansible builtins. This is
ansible.builtin.set_fact instead of set_fact for example and aplies for
all actions that are part of ansible.builtin.

All the replaced ansible.builtins:
  assert, command, copy, debug, fail, fetch, file, import_playbook,
  import_tasks, include_role, include_tasks, include_vars, package,
  set_fact, shell, slurp, stat, systemd

tests/group/test_group_idoverrideuser.yml

@@ -9,11 +9,11 @@
       ad_domain: "{{ test_ad_domain | default('ad.ipa.test') }}"
 
   tasks:
-    - include_tasks: ../env_freeipa_facts.yml
+    - ansible.builtin.include_tasks: ../env_freeipa_facts.yml
 
     - block:
       - name: Create idoverrideuser.
-        shell: |
+        ansible.builtin.shell: |
           kinit -c idoverride_cache admin <<< SomeADMINpassword
           ipa idoverrideuser-add "Default Trust View" {{ ad_user }}
           kdestroy -A -q -c idoverride_cache
@@ -95,7 +95,7 @@
 
       always:
       - name: Remove idoverrideuser.
-        shell: |
+        ansible.builtin.shell: |
           kinit -c idoverride_cache admin <<< SomeADMINpassword
           ipa idoverrideuser-del "Default Trust View" {{ ad_user }}
           kdestroy -A -q -c idoverride_cache