Support flag to enable `Preserve Client IP`

[vxav]

Is your feature request related to a problem? Please describe.

Some workloads exposed via ingress require the source IP to be the real one from the client.

Describe the solution you'd like

Check annotation on service LB for a flag to enable Preserve Client IP.

https://docs.vmware.com/en/VMware-NSX-Advanced-Load-Balancer/21.1.4/Installation_Guide/GUID-98AE8D6B-BB4E-47A0-B2AD-296F7E860201.html

Describe alternatives you've considered

No response

Additional context

giantswarm/roadmap#2612

[erkanerol]

cloud-director doc https://docs.vmware.com/en/VMware-Cloud-Director/10.4/VMware-Cloud-Director-Tenant-Portal-Guide/GUID-5B04413B-6761-483B-979C-D99F43651284.html

[erkanerol]

[erkanerol]

I checked AWS case. They respect annotations on LB service

service.beta.kubernetes.io/aws-load-balancer-target-group-attributes: preserve_client_ip.enabled=true

https://kubernetes-sigs.github.io/aws-load-balancer-controller/v2.2/guide/service/annotations/