T7999: VPP add support iavf driver

[sever-sever]

Change summary

Add support for the iavf driver (virtual function)

set vpp settings interface eth1 driver dpdk 
set vpp settings interfaces allow-unsupported-nics

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T7999

Related PR(s)

How to test / Smoketest result

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[github-actions]

👍
No issues in PR Title / Commit Title

[sever-sever]

This driver has not been validated by our team

[c-po]

Add support for community tested only VPP drivers - but officially unsupported by VyOS

[natali-rs1985]

Driver iavf would not pass this check because it is not in drivers_dpdk. You should add it to drivers_dpdk list too

[sever-sever]

I have done some refactoring of my PR

[Copilot]

Pull request overview

This PR adds support for the iavf driver (Intel Adaptive Virtual Function) in VPP, introducing a community driver mechanism that allows the use of drivers not officially tested by VyOS with explicit opt-in through a configuration flag.

Key Changes:

• Added iavf to the list of community-supported DPDK drivers with warning mechanism
• Introduced allow-unsupported-nics configuration option to enable community drivers
• Enhanced driver verification logic to distinguish between officially supported and community drivers

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
python/vyos/vpp/config_verify.py	Adds community_drivers_dpdk list and modifies verify_dev_driver() to return True for community drivers with warning
src/conf_mode/vpp.py	Imports community_drivers_dpdk and adds verification check requiring allow-unsupported-nics for community drivers
interface-definitions/vpp.xml.in	Adds new interfaces settings node with allow-unsupported-nics configuration option

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[github-actions]

CI integration ❌ failed!

Details

CI logs

• CLI Smoketests (no interfaces) 👍 passed
• CLI Smoketests VPP 👍 passed
• CLI Smoketests (interfaces only) 👍 passed
• Config tests ❌ failed
• Config tests VPP 👍 passed
• RAID1 tests 👍 passed
• TPM tests 👍 passed