- name: Find zone files
  find:
    paths: '{{ zone_files }}'
    patterns: 'zone.db'
    recurse: yes
    file_type: 'file'
  register: zone_db_found_files

- name: Build zone.db file list
  set_fact:
    zone_db_files: '{{ zone_db_files + [ [item.path.split("/")[-2], item.path] ] }}'
  loop: "{{ zone_db_found_files['files'] }}"