create rsnapshot hostlist for rsnapshot

rsnapconfig.yml

---
- hosts: backup
  tasks:
    - name: generate hostlist root backup for rsnapshot
      lineinfile: "dest=/opt/rsnapshot/rsnapshot.conf
                  line='{{ item }} / {{ item }}/'
                  state=present"
      with_items:
         - "{{ groups['all'] }}"
    - name: generate hostlist root backup for rsnapshot
      lineinfile: "dest=/opt/rsnapshot/rsnapshot.conf
                  line='{{ item }} /data {{ item }}/data'
                  state=present"
      with_items:
         - "{{ groups['all'] }}"