ipabackup role: 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

roles/ipabackup/tasks/copy_backup_from_server.yml

@@ -1,36 +1,36 @@
 ---
 - name: Fail on invalid ipabackup_item
-  fail: msg="ipabackup_item {{ ipabackup_item }} is not valid"
+  ansible.builtin.fail: msg="ipabackup_item {{ ipabackup_item }} is not valid"
   when: ipabackup_item is not defined or
         ipabackup_item | length < 1 or
         (ipabackup_item.find("ipa-full-") == -1 and
          ipabackup_item.find("ipa-data-") == -1)
 
 - name: Set controller destination directory
-  set_fact:
+  ansible.builtin.set_fact:
     ipabackup_controller_dir:
         "{{ ipabackup_controller_path | default(lookup('env','PWD')) }}/{{
          ipabackup_name_prefix | default(ansible_facts['fqdn']) }}_{{
          ipabackup_item }}/"
 
 - name: Stat backup on server
-  stat:
+  ansible.builtin.stat:
     path: "{{ ipabackup_dir }}/{{ ipabackup_item }}"
   register: result_backup_stat
 
 - name: Fail on missing backup directory
-  fail: msg="Unable to find backup {{ ipabackup_item }}"
+  ansible.builtin.fail: msg="Unable to find backup {{ ipabackup_item }}"
   when: result_backup_stat.stat.isdir is not defined
 
 - name: Get backup files to copy for "{{ ipabackup_item }}"
-  shell:
+  ansible.builtin.shell:
     find . -type f | cut -d"/" -f 2
   args:
     chdir: "{{ ipabackup_dir }}/{{ ipabackup_item }}"
   register: result_find_backup_files
 
 - name: Copy server backup files to controller
-  fetch:
+  ansible.builtin.fetch:
     flat: yes
     src: "{{ ipabackup_dir }}/{{ ipabackup_item }}/{{ item }}"
     dest: "{{ ipabackup_controller_dir }}"
@@ -38,7 +38,7 @@
   - "{{ result_find_backup_files.stdout_lines }}"
 
 - name: Fix file modes for backup on controller
-  file:
+  ansible.builtin.file:
     dest: "{{ ipabackup_controller_dir }}"
     mode: u=rwX,go=
     recurse: yes