[ovhcloud] openstack application credentials, gpu flavors update, stressed downscale fix

[mxm-tr]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This PR edits the ovhcloud provider with the following latest updates:

• Refactor ovh sdk.NodePool state cache to avoid store out-of-date copy of TargetSize, etc... that was leading to inconsistencies in few downscale cases. A pointer is used instead of copy when refreshing objects.

• Add another authentication method for the ovhcloud api, using Openstack application credentials.

• Update the GPU flavor prefix to match the current flavors on ovhcloud

• Removes logic involving spec.providerID after Cluster Autoscaler Cannot Match openstack:///UUID ProviderID to OVH NodePool #8342 was reported

Special notes for your reviewer:

This PR doesn't include any breaking change

Does this PR introduce a user-facing change?

NONE

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: mxm-tr / name: mxmtr (125e23a, 2c98b88, 3e037eb, 58bd663, fd485f9)

[k8s-ci-robot]

Hi @mxm-tr. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: mxm-tr
Once this PR has been reviewed and has the lgtm label, please assign aleksandra-malinowska for approval. For more information see the Code Review Process.

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[mxm-tr]

/easycla

[k8s-triage-robot]

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/lifecycle stale

[k8s-triage-robot]

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/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

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• After 90d of inactivity, lifecycle/stale is applied
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/close

[k8s-ci-robot]

@k8s-triage-robot: Closed this PR.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the PR is closed

You can:

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/close

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[mxm-tr]

/reopen

[k8s-ci-robot]

@mxm-tr: Reopened this PR.

In response to this:

/reopen

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[mxm-tr]

/remove-lifecycle rotten

[jackfrancis]

/ok-to-test