ansible.azure.automation/roles/azure_vmext/tasks/main.yml

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

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

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

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