xDS has an upstream set of build files that makes Gazelle consider their project a whole new Bazel project, which makes Gazelle not generate any build files, even though the upstream ones aren't valid.

See cncf/xds#104.

cel.dev/expr had some upstream Bazel fixes in v0.16.2 without which Gazelle doesn't work.

kubeProxyVersion is deprecated as of KEP-4004. It was never being set to an accurate value before, and we only used it in the e2e test, so removing the additional check should not hurt here.

See https://github.com/kubernetes/enhancements/tree/master/keps/sig-network/4004-deprecate-kube-proxy-version

The untyped rate-limiter was deprecated in favor of a generic one that can just be instantiated to `any` to achieve the previous behaviour.

Signed-off-by: Daniel Weiße <[email protected]>

nextProtos (for ALPN) is now required by gRPC, so add it.