I'm writing an Ansible play to automate new user creation in 100+ Unix servers. I've got the part right where it creates an user and assigns password. But our organization hardening policy demands, whenever a new user is added, username must be updated in "AllowUsers" parameter of sshd\_config file. I'm new to Ansible and have no clue how to get this done. 

Here's "AllowUsers" section of sshd\_config file.

```
AllowUsers root user1 user2 user2

```

This is how it should be after adding a new user "testuser"

```
AllowUsers root user1 user2 testuser

```