Adds support for storage.type to the Kubernetes events input plugin

[mob-galtryn]

What this PR does / why we need it:

This PR adds support for the storage.type option to the Kubernetes Events input type for Fluentbit. This will give users the ability to enable filesystem buffering for the Kuberenets Events input

Which issue(s) this PR fixes:

Fixes #1850

Does this PR introduced a user-facing change?

Added the ability to specify the storage.type parameter to the Kubernetes Events input plugin

Additional documentation, usage docs, etc.:

https://github.com/fluent-operator/blob/ng-mob-add-support-for-storagetype-kube-events-input/docs/plugins/fluentbit/input/kubernetes_events.md

[Cajga]

@joshuabaird would you mind review this PR? Seems to be pretty straightforward as it is based on existing solutions.

[joshuabaird]

We are missing the enum here? CRDs in charts/fluent-bit-crds/templates and config/crd/bases should be autogenerated using make manifests.

[mob-galtryn]

@joshuabaird I have generated the CRDs with make manifests and the enums have been added as well. Are you able to review?

[joshuabaird]

@mob-galtryn Thanks! Would you mind looking at the CI failures?

[mob-galtryn]

@joshuabaird seems to be focused on docs/plugins/fluentbit/input/kubernetes_events.md, are the documents autogenerated during the pipeline?

[joshuabaird]

docs/plugins/fluentbit/input/kubernetes_events.md, are the documents autogenerated during the pipeline?

Can you try running make docs-update and committing the changes? It looks like the comment in the docs doesn't actually match what is generated.

[mob-galtryn]

Sure I have committed the changes now