Enable host network for the admission controller pod

[PavelSazonovArammeem]

/kind feature

What this PR does / why we need it:

Adds optional hostNetwork parameter to the VPA admission controller Helm chart. This allows users to enable host network mode when the admission controller pod needs direct access to the host's network namespace.

Which issue(s) this PR fixes:

Fixes #9143

Special notes for your reviewer:

The parameter is optional and not set by default, allowing Kubernetes to use its default behavior (hostNetwork: false). This follows the existing pattern used for other optional parameters like priorityClassName.

Does this PR introduce a user-facing change?

Added optional `hostNetwork` parameter to VPA admission controller chart for cases requiring host network access.

[linux-foundation-easycla]

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[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: PavelSazonovArammeem
Once this PR has been reviewed and has the lgtm label, please assign adrianmoisey for approval. For more information see the Code Review Process.

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Details

Needs approval from an approver in each of these files:

• vertical-pod-autoscaler/charts/vertical-pod-autoscaler/OWNERS

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[adrianmoisey]

/ok-to-test

[omerap12]

/release-note-none

[adrianmoisey]

The CLA needs signing: #9148 (comment)

[adrianmoisey]

/close

#9176

[k8s-ci-robot]

@adrianmoisey: Closed this PR.

Details

In response to this:

/close

#9176

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.