host*: 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/host/test_host_empty_string_params.yml

@@ -6,12 +6,12 @@
 
   tasks:
   - name: Get Domain from server name
-    set_fact:
+    ansible.builtin.set_fact:
       ipaserver_domain: "{{ ansible_facts['fqdn'].split('.')[1:] | join ('.') }}"
     when: ipaserver_domain is not defined
 
   - name: Set host1_fqdn .. host6_fqdn
-    set_fact:
+    ansible.builtin.set_fact:
       host1_fqdn: "{{ 'host1.' + ipaserver_domain }}"
 
   # CLEANUP TEST ITEMS