DRAAdminAccess: update resourceclaim_controller metrics

[ritazh]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This PR updates https://github.com/kubernetes/enhancements/tree/master/keps/sig-auth/5018-dra-adminaccess to update resourceclaim_controller metrics.

Which issue(s) this PR is related to:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

kube-controller-manager now reports the following metrics for ResourceClaims with admin access:
- `resourceclaim_controller_creates_total` count metric with labels admin_access (true or false), status (failure or success) to track the total number of ResourceClaims creation requests
- `resourceclaim_controller_resource_claims` gauge metric with labels admin_access (true or false), allocated (true or false) to track the current number of ResourceClaims

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

- [KEP]: https://github.com/kubernetes/enhancements/issues/5018

/sig auth
/wg device-management
/sig node
/triage-accepted
/milestone v1.34
/assign @enj @pohly

[ritazh]

/triage accepted

[ritazh]

/test pull-kubernetes-unit
/test pull-kubernetes-e2e-gce

[ritazh]

/test pull-kubernetes-e2e-gce

[pohly]

/lgtm
/hold

For other opinions and squashing into one commit.

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 85ce799271e50f6166ca4cc86282bb7edab69b8a

[bart0sh]

/lgtm

Please, squash your commits into one, thanks!

[pohly]

@ritazh: squashing != rebasing.

Please use git rebase -i --keep-base in the future, then you don't loose the LGTM (at least in the k/k repo).

Still the same change, so

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: a6850d80616716453175ba8782731808eb161d16

[ritazh]

@ritazh: squashing != rebasing.

Please use git rebase -i --keep-base in the future, then you don't loose the LGTM (at least in the k/k repo).

Still the same change, so

/lgtm

Thanks for the tip. I usually rebase to make sure my changes work with the latest master in case there are changes in tests. But prow should take care of that.

@enj PTAL and remove the hold

[enj]

/lgtm
/approve
/hold cancel

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: enj, pohly, ritazh

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:

• pkg/controller/resourceclaim/OWNERS [pohly]

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