[Flake] [sig-cli] Kubectl client Simple pod should return command exit codes should support port-forward

[aojea]

See this once in https://prow.k8s.io/view/gs/kubernetes-jenkins/pr-logs/pull/124467/pull-kubernetes-e2e-kind-ipv6/1782694702064078848 but the error does not look right

{ failed [FAILED] Container port output missing expected value. Wanted:'It works!', got: Client sent an HTTP request to an HTTPS server.
In [It] at: k8s.io/kubernetes/test/e2e/kubectl/kubectl.go:554 @ 04/23/24 09:14:34.283
}

how can port forward send this to an https server?

STEP: forwarding the container port to a local port - k8s.io/kubernetes/test/e2e/kubectl/kubectl.go:542 @ 04/23/24 09:14:34.071
I0423 09:14:34.071990 69210 portforward.go:180] starting port-forward command and streaming output
I0423 09:14:34.072086 69210 util.go:585] Asynchronously running '/home/prow/go/src/k8s.io/kubernetes/_output/bin/kubectl kubectl --server=https://[::1]:34783 --kubeconfig=/root/.kube/kind-test-config --namespace=kubectl-6707 port-forward --namespace=kubectl-6707 httpd :80'
I0423 09:14:34.072534 69210 portforward.go:189] reading from `kubectl port-forward` command's stdout
STEP: curling local port output - k8s.io/kubernetes/test/e2e/kubectl/kubectl.go:546 @ 04/23/24 09:14:34.276
I0423 09:14:34.277776 69210 kubectl.go:549] got: Client sent an HTTP request to an HTTPS server.

[FAILED] Container port output missing expected value. Wanted:'It works!', got: Client sent an HTTP request to an HTTPS server.

are we. leaking connections or not redirecting it correctly and the upgreadware proxy fails?

/cc @liggitt @seans3

/kind flake

[k8s-ci-robot]

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[neolit123]

/sig cli

[eddiezane]

/assign