playbook.yml

---

- name: cleanup
  hosts: localhost
  gather_facts: false
  tasks:
     - name: Cleanup
       debug:
         msg: "Doing cleanup"
     - name: Foo
       standalone_module1: {}
  tags:
    - cleanup

- name: prepare
  hosts: localhost
  gather_facts: false
  tasks:
    - name: Prepare
      debug:
        msg: "Doing prepare"

    - name: Add new host to tests group
      ansible.builtin.add_host:
        name: 127.0.0.1
        groups: test_group

- name: converge
  hosts: test_group # <-- this should now contain one host, but it does not
  gather_facts: false
  tasks:
     - name: converge
       debug:
         msg: "Doing converge"

- name: destroy
  hosts: localhost
  gather_facts: false
  tasks:
     - name: Destroy
       debug:
         msg: "Doing destroy"