ansible/books/base.yml

#!/usr/bin/env ansible-playbook
---
- hosts: server
  roles:
    - networking
    - base
    - users
    - ssh
  tasks:
    - name: Check if host is using cloud init
      stat:
        path: /etc/cloud
      register: cloudinit_folder
    - include_role: 
        name: cloudinit
      when: cloudinit_folder.stat.exists