Add cloud-provider for Slicer

[welteki]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This PR adds Slicer as a new cloud provider to the Kubernetes Autoscaler. Slicer is a lightweight microVM platform. It offers a convenient, commercially supported way for running Kubernetes on Firecracker microVMs on bare-metal and on-premises infrastructure.

Integrating Slicer into the Autoscaler allows users to dynamically scale their Kubernetes clusters on bare-metal and on-premises infrastructure

Key highlights:

• Implements the CloudProvider, NodeGroup interfaces specific to Slicer microVMs
• Supports scale up/down using the Slicer's REST API for microVM lifecycle management

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

The initial version covers scale-up and scale-down functionality.

Does this PR introduce a user-facing change?

Slicer has been added as a supported cloud provider in Kubernetes Cluster Autoscaler.

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

- [Other doc]: https://docs.slicervm.com/examples/autoscaling-k3s/

[k8s-ci-robot]

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[k8s-ci-robot]

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: welteki
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[alexellis]

The EasyCLA paperwork has been done for OpenFaaS Ltd now.

[alexellis]

Hi @Shubham82 @x13n it looks like GitHub picked you to take a look over our PR for Slicer. Do you have time to check it over and LTGM, etc? Or would there be someone else we'd be better pinging?

It's well tested and a fairly simple PR (from looking at past PRs to add new 'clouds').

Regards,

Alex

[k8s-ci-robot]

PR needs rebase.

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-sigs/prow repository.

[welteki]

Hi @jackfrancis, adding you here in case you have a moment to review. Please let us know if there are any changes needed to help get this PR accepted.

Regards,
Han

[linux-foundation-easycla]

• ✅ login: alexellis / name: Alex Ellis (83b7fa4)
• ❌ - login: @welteki / name: Han Verstraete . The commit (c1a76d3) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.