[ENHANCEMENT] Add Northbound traffic support for ANP API

[tssurya]

Is your enhancement request related to a problem? Please describe.
This is follow of up of #28
This issue tracks adding support for northbound traffic use case and also host-networked pod traffic use case for ANP from CNI pods.

Describe the solution you'd like
#117 outlines the details, it has undergone some rounds of review already at #86

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

Tasks

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1. NPEP: Add support for egress traffic control #117
   approved cncf-cla: yes lgtm size/M +4
   
2. Implement Cluster Egress Traffic semantics (ANP&BANP NorthBound Support) - PART1 - Nodes #143
   api-review approved cncf-cla: yes lgtm size/L +5
   

   
3. Document egress samples
4. NPEP: Iron out Cluster Egress Support API Design #144
   api-review approved cncf-cla: yes lgtm size/L +5
   

   
5. Implement inline CIDR block egress peer #185
   approved cncf-cla: yes lgtm size/L +4
   
6. Add conformance tests for node and cidr selector peers #193
   approved area/conformance cncf-cla: yes lgtm size/XL +5
   

[tssurya]

/assign @tssurya

[tssurya]

Now that the Provisional NPEP is done, I am working on PoC to implement it and then will re-open the NPEP in the implementable phase with link to PoC.

[tssurya]

/label kind/feature

[k8s-ci-robot]

@tssurya: The label(s) /label kind/feature cannot be applied. These labels are supported: api-review, tide/merge-method-merge, tide/merge-method-rebase, tide/merge-method-squash, team/katacoda, refactor. Is this label configured under labels -> additional_labels or labels -> restricted_labels in plugin.yaml?

In response to this:

/label kind/feature

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.

[tssurya]

/kind feature

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/lifecycle stale

[astoycos]

/remove-lifecycle stale

[tssurya]

Status:

1. All design phase NPEPs have merged
2. NodeSelector peer API change has merged
3. inline CIDR selector API change PR is under progress
4. Starting on conformance tests for nodeselector

[tssurya]

Status:

1. All design phase NPEPs have merged
2. NodeSelector peer API change has merged
3. inline CIDR selector API change PR is merged
4. nodeSelector conformance test PR is waiting for reviews
5. starting on cidr conformance tests

[tssurya]

This task is done, closing it!