Add support for volumeAttributesClassName in storage configuration

[scholzj]

VolumeAttributesClass introduces to Kubernetes new way how to manage the performance class of the PVCs. Unlike a Storage Class that is immutable, the Volume Attributes Class allows users more flexibility when configuring parameters of the storage such as IOPS, throughput etc. This is something what comes up from time to time from a Strimzi users in our forum. Currently, it is often managed through various annotations. It would be nice to support the configuration of the VolumeAttributesClass / volumeAttributesClassName in PVCs and in out storage configuration.

[scholzj]

Discussed on a community call on 22.8.2024:This would be a useful feature. A proposal should be written to clarify the API changes, storage diffing changes etc.

[venkatesh2090]

Hi, I would like to have a go at this.

Do you reckon this is easy enough for someone new to the code base. I have been able to provision clusters with this feature enabled on AWS, so I am fine with testing this. Couldn't figure it out locally though since the CSI driver for kind doesn't seem to respect this API.

[scholzj]

I do not think this would be too complicated. But as it would include some changes to the API, this needs to have a proposal first. So you would need to start with that.