vxlan: T7468: add VLAN-to-VNI mapping description

[l0crian1]

Change summary

Add descriptions per VLAN-to-VNI mapping on VxLAN interfaces

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/T7468

Related PR(s)

How to test / Smoketest result

Configure a description for the mappings:

set interfaces vxlan vxlan1 parameters external
set interfaces vxlan vxlan1 port '4789'
set interfaces vxlan vxlan1 source-address 10.5.5.5
set interfaces vxlan vxlan1 vlan-to-vni 10 vni '1001'
set interfaces vxlan vxlan1 vlan-to-vni 10 description "Cust-A"
set interfaces vxlan vxlan1 vlan-to-vni 20 vni '1002'
set interfaces vxlan vxlan1 vlan-to-vni 20 description "Cust-B"

Show the config to see the descriptions

vyos@PE2# show interfaces vxlan vxlan1 
 parameters {
     external
 }
 port 4789
 source-address 10.5.5.5
 vlan-to-vni 10 {
     description "Cust-A"
     vni 1001
 }
 vlan-to-vni 20 {
     description "Cust-B"
     vni 1002
 }

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

[github-actions]

All contributors have signed the CLA ✍️ ✅
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[l0crian1]

recheck

[l0crian1]

recheck

[github-actions]

CI integration 👍 passed!

Details

CI logs

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

[sever-sever]

Add a description for vlan-to-vni

[c-po]

Implementation looks good - nothing to complain