Failed to fetch backup if backup_directory not ends with /

Summary

If elasticsearch_backup_directory not ends with / then backup action fails.

Steps to reproduce

Run backup action with elasticsearch_backup_directory set to /tmp/elasticsearch-backup.

Expected behavior

Backup finish properly.

Actual behavior

Backup fails.

Relevant logs and/or screenshots

fatal: [localhost]: FAILED! => {"failed": true, "msg": "failed to transfer file to /var/lib/citask/schedules/openstack-backup/elasticsearch: [Errno 21] Is a directory: '/var/lib/citask/schedules/openstack-backup/elasticsearch'"}

Possible fixes

Add slash after variable {{ elasticsearch_backup_directory }}:

- name: "fetch file to localhost"
  fetch:
    src: "{{ _elasticsearch_backup_file_output }}"
    dest: "{{ elasticsearch_backup_directory }}"
    flat: yes