[Winkernel Proxier] Implement support for internal traffic policy in windows kube proxy

[princepereira]

What would you like to be added?

• These are changes as per KEPS: https://github.com/kubernetes/enhancements/tree/master/keps/sig-network/2086-service-internal-traffic-policy
• When a InternalTrafficPolicy is set to Local, consider only local endpoints for creating cluster ip load balancer.
• When both InternalTrafficPolicy and ExternalTrafficPolicy is set to Local, ignore creating remote endpoints.

Why is this needed?

• With these changes, kube proxy will take constant time always for load balancer creation.
• Implementing InternalTrafficPolicy feature will optimize the load balancer recreation during rolling updates.
• This will also minimize the leaking of traffic through stale deleting endpoints during rolling update.

[k8s-ci-robot]

@princepereira: This issue is currently awaiting triage.

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[princepereira]

/sig windows

[princepereira]

/sig network

[thockin]

Who gets assigned windows kube-proxy issues now? @danwinship

[thockin]

@MikeZ87

[thockin]

/assign @bridgetkromhout

[bridgetkromhout]

/assign @MikeZappa87

[MikeZappa87]

This can be closed as the referenced PR has been merged.

/close

[k8s-ci-robot]

@MikeZappa87: Closing this issue.

In response to this:

This can be closed as the referenced PR has been merged.

/close

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.