Add user to administrators or administrateurs group

[fanchf...@gmail.com]

Hello,

I would like to create a playbook that adds a user to the "administrators" group. 

his action is simple and is an example. But my problem is that I have servers in FR and the group is not "administrators" but "administrateurs".

I saw that we could make conditions in the playbooks but I don't know how to test, if I am on an OS FR or US.

Could you advise me?

Thank you beforehand.

cordially