Allow texteditors highlight rules based on extention

[freeseacher]

What is missing? For now alerts have to be with extension .rules https://github.com/cloudalchemy/ansible-prometheus/blob/015db753b1ab334a6669b3045c125088bfb4c5ef/templates/prometheus.yml.j2#L21

that disables syntax highlight for most text editors. Please change it to *.rules.yml

Why do we need it? It looks like basic user attention.

[freeseacher]

probably introducing default with that kind of line prometheus_rule_files: "{{ prometheus_config_dir }}/rules/*.rules" looks like reasonable solution

[paulfantom]

That makes sense to me. Maybe we can provide both for backwards compatibility? Can you create PR?

[SuperQ]

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