CVE-2023-44487: disable HTTP2 for webhook server and bump controller-runtime to 0.14.7

[alebedev87]

Issue

N/A

Description

This PR addresses the HTTP2 Rapid Reset (CVE-2023-44487) by:

• disabling HTTP2 for the webhook server until the CVE is fully addressed in the standard library and Kubernetes.
• bumping controller-runtime to v0.14.7 which in turn bumped x/net and kube API.

Before the change:

$ oc get pods albc-aws-load-balancer-controller-666676c7bf-df7rp -o yaml | yq .spec.containers[0].args
- --cluster-name=alebedev-1026-csv9b
- --ingress-class=alb
- --aws-region=us-east-2
- --aws-vpc-id=vpc-09f727cc56ff10c9f

$ oc get svc aws-load-balancer-webhook-service
NAME                                TYPE           CLUSTER-IP       EXTERNAL-IP                                                               PORT(S)         AGE
aws-load-balancer-webhook-service   LoadBalancer   172.30.165.126   af2495b6963494f6e9b7b88a65e5eaf0-1803416629.us-east-2.elb.amazonaws.com   443:31795/TCP   40m

$ curl -kv https://af2495b6963494f6e9b7b88a65e5eaf0-1803416629.us-east-2.elb.amazonaws.com 2>&1 | grep 'ALPN'
* ALPN, offering h2
* ALPN, offering http/1.1
* ALPN, server accepted to use h2

After:

$ oc get pods albc-aws-load-balancer-controller-7bd4c4dff7-ksfx9 -o yaml | yq .spec.containers[0].args
- --cluster-name=alebedev-1026-csv9b
- --ingress-class=alb
- --aws-region=us-east-2
- --aws-vpc-id=vpc-09f727cc56ff10c9f
- --webhook-disable-http2

$ curl -kv https://af2495b6963494f6e9b7b88a65e5eaf0-1803416629.us-east-2.elb.amazonaws.com 2>&1 | grep 'ALPN'
* ALPN, offering h2
* ALPN, offering http/1.1
* ALPN, server accepted to use http/1.1

Note: A new flag for the HTTP2 disabling is added. I'm fine to remove the flag if it's not the common way.

Checklist

• Added tests that cover your change (if possible)
• Added/modified documentation as required (such as the README.md, or the docs directory)
• Manually tested
• Made sure the title of the PR is a good description that can go into the release notes

BONUS POINTS checklist: complete for good vibes and maybe prizes?! 🤯

• Backfilled missing tests for code in same general area 🎉
• Refactored something and made the world a better place 🌟

[k8s-ci-robot]

Hi @alebedev87. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: alebedev87

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