Expose websocket header to support base64.channel.k8s.io or v4.base64.channel.k8s.io channel protocol

[DrAuYueng]

What type of PR is this?

/kind feature

What this PR does / why we need it:

The channel protocols supported by k8s include:

• channel.k8s.io
• base64.channel.k8s.io
• v4.channel.k8s.io
• v4.base64.channel.k8s.io

Currently, it is not possible to pass the websocket request header sec-websocket-protocol to wsclient because it cannot be changed in the generated code, and only v4.channel.k8s.io can be used by default in ws_client.py.

The sec-websocket-protocol header needs to be exposed to support base64-encoded messages.

Which issue(s) this PR fixes:

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

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

Signed-off-by: DrAuYueng [email protected]

[DrAuYueng]

/release-not-none

[DrAuYueng]

E2E test failed, let me check.

[roycaihw]

/assign @yliaog

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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/lifecycle stale

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[k8s-ci-robot]

PR needs rebase.

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[k8s-triage-robot]

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/close

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@k8s-triage-robot: Closed this PR.

In response to this:

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/close

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