Have labels on GCP Disks and Snapshots

[jenting]

Is your feature request related to a problem? Please describe

We need to add labels to GCP Disks and Snapshots because we use labels to filter the cost.

Describe the behaviour you'd like

Make the GCP Disks and Snapshots have labels so we are able to filter the cost.

Describe alternatives you've considered

N/A

Additional context

#10186 (comment)

#7901

[sagor999]

Spent some time researching how to do that and have a plan now.
There is already support for adding labels to disk via adding a parameter to storage class like so:

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: csi-gce-pd
provisioner: pd.csi.storage.gke.io
parameters:
  type: pd-balanced
  replication-type: none
  labels: cluster=preview,region=us

So for disks we can implement this by using this param and creating a storage class for each workspace class. Since each workspace class can specify its own storage class, it should work just fine.

There is no such support for VolumeSnapshotClass though, but it should not be too difficult to add support for it in gce-csi driver, so going to do that next.

[sagor999]

Upstream PR: kubernetes-sigs/gcp-compute-persistent-disk-csi-driver#1017

[jenting]

Upstream PR: kubernetes-sigs/gcp-compute-persistent-disk-csi-driver#1017

Code merged, waits for the next release 🚀

[jenting]

It's good to add the cluster name to the label, so we can easily file the cluster by the label on the GCP console.

[sagor999]

This PR enables labels on disks.
Once upstream will release new gsi driver containing my fix for allowing to add labels to snapshot classes, we will do the same for snapshots. Until then I will add blocked label.