Do not close whole websocket when v5 protocol is supported

[CGNonofr]

Recently the v5.channel.k8s.io was implemented allowing to close exec streams.

But the close still closes the whole websocket when the stdin is closed

[linux-foundation-easycla]

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: CGNonofr
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[k8s-ci-robot]

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[brendandburns]

Thank you for the fix! This should probably be ported to release-1.x branch also.

[brendandburns]

Also we need you to sign the CLA.

[CGNonofr]

Also we need you to sign the CLA.

I looks like a really heavy process for a so small change, I'm not sure I want to provide my mailing address either.

I authorize you to close that PR and open one of yours with the fix!

[cjihrig]

I authorize you to close that PR and open one of yours with the fix!

@brendandburns is there any policy for shepherding in a change under these circumstances?

[brendandburns]

@cjihrig apologies, I missed your comment.

In general, I tend to do a clean-room reimplementation and send a PR.

[cjihrig]

Created a new patch on the main release line in #2144.

I guess I'll close this out. Thanks for the PR anyway.

/close

[mstruebing]

Closing as this was done in #2144