- name: "populate oo_hosts_to_terminate host group if needed"
  hosts: localhost
  gather_facts: no
  tasks:
  - name: Evaluate oo_host_group_exp if it's set
    add_host: "name={{ item }} groups=oo_hosts_to_terminate"
    with_items: "{{ oo_host_group_exp | default('') }}"
    when: oo_host_group_exp is defined

- name: "Terminate instances"
  hosts: localhost
  connection: local
  tasks:
    - name: Terminate master instances
      local_action:
        module: gce
        state: 'absent'
        instance_names: "{{ oo_hosts_to_terminate }}"