Allow to use variables in Alert Rule's Panel Screenshot

[NikonNLG]

Why is this needed:

Reduce noise on screenshot and see only required data

What would you like to be added:

For example, we have simple query like avg(rate(node_cpu_seconds_total{mode="system"}[1m])) by (instance) *100.
Also, we have panel like CPU Usage - $instance to show instance name, and 10 instances.

Unfortunately, on Alert Rule I can add only Dashboard and Panel without any variables. So I always get default screenshot with instance0, even if instance9 is fired alarm. The other way, I can put all data on one screenshot but it will increase the noise.

I'm not sure the best way to implement it. Maybe we can pass labels to Panel, or something like this?

Example of bad alert graph (all instances in one screenshot)

Example of good alert graph (only affected instance)

Who is this feature for?

Almost all users of Alert Rules.