cluster/gce: add match conditions to PersistentVolume labeling webhook

[andrewsykim]

What type of PR is this?

/kind feature

What this PR does / why we need it:

In #121628 we disabled PersitentVolumeLabel admission controller and added a webhook as a replacement. This webhook only operates against GCE PD, AWS EBS, Azure Disk and vSphere volume PVs. Add a match condition such that the webhook is only invoked for these PVs.

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

This issue is currently awaiting triage.

If a SIG or subproject determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[andrewsykim]

/assign @msau42 @cheftako

[cheftako]

I like this improvement :D
1 Question. As this is checked into the GCE manifest, do we need other cloud provider storage types. It would be nice to have this example somewhere but not clear it makes sense here.

[andrewsykim]

1 Question. As this is checked into the GCE manifest, do we need other cloud provider storage types.

Good catch, I updated the match condition to only check for has(object.spec.gcePersistentDisk)

It would be nice to have this example somewhere but not clear it makes sense here.

We can update the manifests in https://github.com/kubernetes-sigs/cloud-pv-admission-labeler/tree/main/manifests to include the match conditions, but maybe just leave it as a comment since only 1.28 clusters have match conditions enabled by default.

[msau42]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: f14f9e3f855055073e3ea6f529523255edd6bdd3

[cheftako]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andrewsykim, cheftako

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• cluster/gce/OWNERS [cheftako]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment