Ensure we can download the wazuh-template

[le-ya]

In the filebeat_oss.pp there is an exec "cleanup /etc/filebeat/wazuh-template.json" who try to delete a file, and when the file is missing it fails and stop the next action which is download the wazuh-template.

This situation happens at bootstrapping.

[cruelsmith]

This issue came with #516. I missed this state since i did not had done a bootstrap 🙈
#543 is the better solution or we add a onlyif => 'test -f /etc/filebeat/wazuh-template.json', to the exec to fix this.

[c-bordon]

Hello le-ya, with the PR we have applied a solution to this error, thanks for participating in the community