feat(hetzner): autoscaler includes new provided-by label

[lukasmetzner]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Hetzner introduced a new node label to distinguish between dedicated servers and cloud VMs. This is primarily used to workround the scheduler limitation for CSI volumes. This PR adds the label to TemplateNodeInfo.
Further information:

• feat(instance): add label to distinguish servers from Cloud and Robot hetznercloud/hcloud-cloud-controller-manager#764
• feat: force pods with volumes to be scheduled on Cloud servers hetznercloud/csi-driver#743

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Hetzner: Consider label `instance.hetzner.cloud/provided-by` for scheduling

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

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: lukasmetzner / name: Lukas Metzner (690b059)

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[apricote]

/ok-to-test

[apricote]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: apricote, lukasmetzner

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• cluster-autoscaler/cloudprovider/hetzner/OWNERS [apricote]

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