Update README

[sdarwin]

A small modification to the README, changing the example playbook from "- hosts: all" to "- hosts: prometheus", with an explanatory note.

[sdarwin]

This PR is low priority, not critical.

Still, I have been thinking about it more and there are probably various ways to handle it.

• Option 1 , what was proposed here already.

• Option 2 , instead, only make the following text change in the readme, and nothing else:

- hosts: prometheus

Quite minimal.

• Option 3 , similar as Option 1, but less verbose. The text would be:

Create an ansible host group such as "prometheus" or "monitoring-servers", and add prometheus servers to that group.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[SuperQ]

This role has been deprecated in favor of a the prometheus-community/ansible collection.