Ansible collection to automatically install rdiff-backup

Hi,

as some of you have signaled that they have large deployments of 
rdiff-backup, an automated way to deploy rdiff-backup might be useful. 
It can also hide some of the complexity of the installation, once it's 
been fine tuned.

The collection can be grabbed from:

	https://galaxy.ansible.com/rdiffbackup/rdiff_backup

And is maintained at:

	https://github.com/rdiff-backup/rdiff-backup-ansible

If someone with Ansible knowledge, or willing to learn it, wants to lead 
the maintenance, I would be more than happy to support him or her.

For now, the installation works on the recent versions of the mainstream 
Linux distros, for which rdiff-backup is packaged by this team, and for 
Windows 2019/10.

Introducing some fall-back installation approaches using the package 
and/or pip modules would be the next logical step. 
Installing/Configuring an SSH client on Windows could also be an 
interesting add-on. [1]

If we don't speak until then and if it represents something to you, 
Merry Christmas and Happy New Gregorian Year.

KR, Eric

[1] https://github.com/rdiff-backup/rdiff-backup-ansible/issues