Add extra tags to Grafana annotations

[bilbof]

This adds the name and namespace tags to Grafana annotations.

This makes it possible to use the Grafana provider when one has multiple Flux tenants writing to the same Grafana instance.

[bilbof]

I can also add reason in here, that might be useful

[stefanprodan]

Please document this change in https://github.com/fluxcd/notification-controller/blob/main/docs/spec/v1beta1/provider.md#grafana

[makkes]

@bilbof if you need assistance in documenting this change, I'd be happy to help getting this PR merged. Just let me know.

[Dariusch]

Hey guys, any updates on this PR? I'd like to see this one get merged.

Regarding the documentation: This PR is only adding additional tags. The current tags are not documented anywhere

[Dariusch]

@stefanprodan sorry to ping you, but the PR is not moving forward, though it's an easy fix...

How can we help to get this PR merged?

[cmitri-harris]

Any chance this got merged?

[stefanprodan]

This PR is abandoned, but since this was opened, things have evolved. You can add metadata in the Alert that will end up as Grafana annotations, for example:

apiVersion: notification.toolkit.fluxcd.io/v1beta3
kind: Alert
metadata:
  name: <name>
spec:
  eventMetadata:
    tenant: "team1"
    env: "production"
    region: "us-east-1"

[cmitri-harris]

Thanks @stefanprodan for responding.
The advantage of having the namespace and name as tags is that the values are dynamically assigned.
I tried to expand variables in eventMetadata but didn't work.
Since we have multiple namespaces and applications, now I'm creating multiple Alerts with static eventMetadata for each.
Ultimately, one Alert definition should cover all and in Grafana, we filter accordingly.

[stefanprodan]

@cmitri-harris feel free to open a new PR for this, we can close this one and review yours.