---
- name: list vm
  include: list.yml
  vars:
    vm: "{{ item }}"
  when:
    - action is defined 
    - action == 'list'
    - (vms | default([], true) | length) > 0
  with_items: "{{ vms }}"

- name: In vm state
  include: "{{ item.state | default('present', true) }}.yml"
  vars:
    vm: "{{ item }}"
  when:
    - action is undefined 
    - (vms | default([], true) | length) > 0
  with_items: "{{ vms }}"

- name: Update/create vm
  include: present.yml
  vars:
    vm: "{{ item }}"
  when:
    - action is defined 
    - action == 'present'
    - item.state is undefined
    - (vms | default([], true) | length) > 0
  with_items: "{{ vms }}"

- name: Delete vm
  include: absent.yml
  vars:
    vm: "{{ item }}"
  when:
    - action is defined 
    - action == 'absent'
    - item.state is undefined
    - (vms | default([], true) | length) > 0
  with_items: "{{ vms }}"
...