feat!: refactor event collection configuration

[swiatekm]

Description

Move event configuration to the sumologic.events section, containing common configuration for OT and FluentD. This should also include switching to otelcol as the default provider, but I thought this would be easier to review without that change.

With this change, provider-agnostic configuration for events includes:

• sourceName and sourceCategory
• persistence

I'm wondering if I shouldn't also expose something to more easily modify the OT pipeline - for example by letting the user add processors to the end of it. WDYT?

---

Checklist

• Changelog updated

Testing performed

• Redeploy fluentd and fluentd-events pods
• Confirm events, logs, and metrics are coming in

[sumo-drosiek]

I think we should mark it as breaking-change as there are changes in fluentd buffer path

[sumo-drosiek]

I'm wondering if I shouldn't also expose something to more easily modify the OT pipeline - for example by letting the user add processors to the end of it. WDYT?

We can add optional metadata enrichment and filtering as well, but generally wouldn't do anything unless we have explicit request/usecase for it

[swiatekm]

I think we should mark it as breaking-change as there are changes in fluentd buffer path

It's a breaking change for many reasons, but I've also already marked it as such accoring to conventional commits - what else did you have in mind?

[sumo-drosiek]

gh label

[sumo-drosiek]

Shouldn't this go to otelevents configuration?
It sounds like more advanced and technical configuration

[sumo-drosiek]

Overall this is nice, but not sure if persistence should go to the events or otelevents configuration

[swiatekm]

Config migration PR: SumoLogic/sumologic-kubernetes-tools#305

[swiatekm]

Overall this is nice, but not sure if persistence should go to the events or otelevents configuration

As per offline discussion, I left persistence in the common config, but split off the K8s-specific bits.

[sumo-drosiek]

Please make linters happy :)

[sumo-drosiek]

one nit