Description:

Describe the desired behavior, what scenario it enables and how it
would be used.

Similar to PDB support for Envoy Proxy fleet https://github.com/envoyproxy/gateway/blame/b97f1a14f877f00317bb8467de7ea161cfff4781/internal/infrastructure/kubernetes/proxy/resource_provider.go#L530

also add support for PDB in RateLimit Service

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Any extra documentation required to understand the issue.