Unnecessary set_group_if_different

[nigelkirby]

I'm curious why this is included:
module.set_group_if_different(config_file, user, False)

In the next line the file permissions are set to 600, so the group of the file is irrelevant. Having this included causes this to appear to fail on systems that don't have a corresponding group for each user (like mac os x).

I say it "appears to fail" because since the config file is already written the end result of the task is actually fine, but ansible exits with failed and of course the rest of a playbook might not complete.