Disable HTTP2 in webhooks

[dprince]

Also bumps golang.org/x/net to v0.17.0

Jira: OSPRH-468

[openshift-ci]

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[gibizer]

prow jobs are not triggered :/

[gibizer]

/test placement-operator-build-deploy-kuttl

[openshift-ci]

@gibizer: No presubmit jobs available for openstack-k8s-operators/placement-operator@dev-preview2

In response to this:

/test placement-operator-build-deploy-kuttl

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/test-infra repository.

[gibizer]

Trying to enable prow on dev-preview2 openshift/release#45501

[gibizer]

/lgtm
We are intentionally merging this without having the test coverage to expedite the fix