Commits on Mar 12, 2022

1. Fix health check from Google's Load Balancer …

   This change adds 2 options for windows:
   --forward-healthcheck-vip: If true forward service VIP for health check
   port
   --root-hnsendpoint-name: The name of the hns endpoint name for root
   namespace attached to l2bridge, default is cbr0
   
   When --forward-healthcheck-vip is set as true and winkernel is used,
   kube-proxy will add an hns load balancer to forward health check request
   that was sent to lb_vip:healthcheck_port to the node_ip:healthcheck_port.
   Without this forwarding, the health check from google load balancer will
   fail, and it will stop forwarding traffic to the windows node.
   
   This change fixes the following 2 cases for service:
   - `externalTrafficPolicy: Cluster` (default option): healthcheck_port is
   10256 for all services. Without this fix, all traffic won't be directly
   forwarded to windows node. It will always go through a linux node and
   get forwarded to windows from there.
   - `externalTrafficPolicy: Local`: different healthcheck_port for each
   service that is configured as local. Without this fix, this feature
   won't work on windows node at all. This feature preserves client ip
   that tries to connect to their application running in windows pod.
   
   Change-Id: If4513e72900101ef70d86b91155e56a1f8c79719

   

   anfernee committed Mar 12, 2022
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