Adding NpmLite Feature

[rejain456]

Reason for Change:

This pr adds code changes for a new feature called NPM-Lite which is a subset of NPM.
NPM Lite provides Singularity team with a “light” NPM which addresses:

• Heavy load on API Server: NPM Lite must support ~4K Nodes (NPM currently supports ~250 Nodes).
• Windows NPM performance issues caused by HNS SetPolicies.

Issue Fixed:

To make npm more scalable for the singularity team, npm lite consists of 2 main limitations:

1. Only accepts CIDR-based network policies
2. Enables the daemon set to watch for pods only under its node

This pr adds code to cover both the points above

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• relevant PR labels added

Notes:

[huntergregory]

CIDR check looks good. Wondering if we can/should scope the informer change to pod controller

[rejain456]

CIDR check looks good. Wondering if we can/should scope the informer change to pod controller

[huntergregory]

/azp run Azure Container Networking PR

[huntergregory]

/azp run NPM Conformance Tests

[azure-pipelines]

No pipelines are associated with this pull request.

[huntergregory]

/azp run NPM Scale Test

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[azure-pipelines]

No pipelines are associated with this pull request.

[rejain456]

/azp run Azure Container Networking PR

[azure-pipelines]

Commenter does not have sufficient privileges for PR 2992 in repo Azure/azure-container-networking

[rejain456]

/azp run NPM Conformance Tests

[azure-pipelines]

Commenter does not have sufficient privileges for PR 2992 in repo Azure/azure-container-networking

[sheylatrudo]

/azp run NPM Conformance Tests

[azure-pipelines]

No pipelines are associated with this pull request.

[rejain456]

/azp run Azure Container Networking PR

[azure-pipelines]

Commenter does not have sufficient privileges for PR 2992 in repo Azure/azure-container-networking

[rejain456]

/azp run Azure Container Networking PR

[azure-pipelines]

Commenter does not have sufficient privileges for PR 2992 in repo Azure/azure-container-networking

[rejain456]

/azp run Azure Container Networking PR

[azure-pipelines]

Commenter does not have sufficient privileges for PR 2992 in repo Azure/azure-container-networking

[rejain456]

/azp run Azure Container Networking PR

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[rejain456]

/azp run NPM Scale Test

[rejain456]

/azp run NPM Conformance Tests

[azure-pipelines]

No pipelines are associated with this pull request.

[azure-pipelines]

No pipelines are associated with this pull request.

[jpayne3506]

/azp

[azure-pipelines]

Azure Pipelines successfully started running 2 pipeline(s).

[azure-pipelines]

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[jpayne3506]

/azp list

[azure-pipelines]

CI/CD Pipelines for this repository:

• Azure Container Networking PR
• CNI Release Test
• Cilium Scale Test
• Cilium Hubble Enablement
• ACN Network Observability E2E
• TriggerCompliantBuild

[jpayne3506]

/azp list

[azure-pipelines]

CI/CD Pipelines for this repository:

• Azure Container Networking PR
• NPM Conformance Tests
• CNI Release Test
• Cilium Scale Test
• Cilium Hubble Enablement
• ACN Network Observability E2E
• TriggerCompliantBuild