fix: add human_friendly_id to 4 schemas for idempotent Repository sync (#29)
## Summary
- Add `local_identifier` attribute + `uniqueness_constraints` + `human_friendly_id` to **InfraVlanVniMapping**, **InfraEVPNInstance**, **InfraMlagInterface**, and **InfraUnderlayLink**, following the same pattern already used for `InfraBGPPeerGroup` and `InfraBGPSession`
- Populate `local_identifier` in all corresponding object YAML files with deterministic composite keys so Infrahub can upsert objects during Repository backend sync instead of creating duplicates
## Schema changes
| Schema file | Model | human_friendly_id |
|---|---|---|
| `infrahub/schemas/vlan_vxlan.yml` | `InfraVlanVniMapping` | `local_identifier__value` |
| `infrahub/schemas/vlan_vxlan.yml` | `InfraEVPNInstance` | `local_identifier__value` |
| `infrahub/schemas/mlag.yml` | `InfraMlagInterface` | `local_identifier__value` |
| `infrahub/schemas/extensions.yml` | `InfraUnderlayLink` | `local_identifier__value` |
## Object file changes
| Object file | Kind | Key format | Example |
|---|---|---|---|
| `infrahub/objects/06-vlans-vxlan.yml` | `InfraVlanVniMapping` | `{device}__vlan{vlan_id}__vni{vni_id}` | `leaf1__vlan40__vni110040` |
| `infrahub/objects/06-vlans-vxlan.yml` | `InfraEVPNInstance` | `{device}__vlan{vlan_id}` | `leaf1__vlan40` |
| `infrahub/objects/12-mlag.yml` | `InfraMlagInterface` | `mlag{id}__{device1}-{device2}` | `mlag1__leaf1-leaf2` |
| `infrahub/objects/14-fabric-links.yml` | `InfraUnderlayLink` | `{local_dev}-{local_intf}__{remote_dev}-{remote_intf}` | `spine1-eth1__leaf1-eth11` |
Note: `InfraMlagInterface` objects (4 entries, one per MLAG pair) and `InfraUnderlayLink` objects (16 entries, all spine↔leaf P2P links) are new additions to their respective files.
## Test plan
- [x] `infrahubctl schema load infrahub/schemas/*.yml` succeeds without errors
- [x] `infrahubctl object load infrahub/objects/06-vlans-vxlan.yml` succeeds
- [x] `infrahubctl object load infrahub/objects/12-mlag.yml` succeeds
- [x] `infrahubctl object load infrahub/objects/14-fabric-links.yml` succeeds
- [x] Re-running the same load is idempotent (no duplicate objects created)
- [x] Gitea Repository backend sync completes without import errors
Damien Arnodo
12d927d460