OCPBUGS-42434: Authenticate CAPZ with cert authentication on ARO HCP

[bryan-cox]

What this PR does / why we need it:
This PR authenticates CAPZ with certificate authentication in order to communicate with Azure Cloud API. The certificate is stored in an Azure key vault and mounted into the capi-provider pod through a Secrets Store CSI driver SecretProviderClass.

Which issue(s) this PR fixes (optional, use fixes #<issue_number>(, fixes #<issue_number>, ...) format, where issue_number might be a GitHub issue, or a Jira story:
Fixes #

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
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[openshift-ci-robot]

@bryan-cox: This pull request references Jira Issue OCPBUGS-42434, which is valid.

3 validation(s) were run on this bug

• bug is open, matching expected state (open)
• bug target version (4.18.0) matches configured target version for branch (4.18.0)
• bug is in the state POST, which is one of the valid states (NEW, ASSIGNED, POST)

Requesting review from QA contact:
/cc @fxierh

The bug has been updated to refer to the pull request using the external bug tracker.

In response to this:

What this PR does / why we need it:
This PR authenticates CAPZ with certificate authentication in order to communicate with Azure Cloud API. The certificate is stored in an Azure key vault and mounted into the capi-provider pod through a Secrets Store CSI driver SecretProviderClass.

Which issue(s) this PR fixes (optional, use fixes #<issue_number>(, fixes #<issue_number>, ...) format, where issue_number might be a GitHub issue, or a Jira story:
Fixes #

Checklist

• Subject and description added to both, commit and PR.
• Relevant issues have been referenced.
• This change includes docs.
• This change includes unit tests.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bryan-cox

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• OWNERS [bryan-cox]

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[openshift-merge-robot]

PR needs rebase.

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