Add VXLAN-ACI Fabric Group Module

[mtarking]

Related Issue(s)

Resolves #527

Note

Stacked on top of #246 (branch issue-245), which introduces the shared
manage_fabric_group base package. Do not merge until #246 merges, then
this branch will be rebased onto develop.

Proposed Changes

Adds a new nd_manage_fabric_group_vxlan_aci module to manage VXLAN-to-ACI
Fabric Groups (management.type: vxlanAci) on Cisco Nexus Dashboard.

Unlike the routed/AI-routed variants, vxlanAci is not a clone of the base
VXLAN (MSD) fabric group — it exposes a smaller, distinct property set, so it is
implemented as a standalone model rather than a subclass.

• Model (plugins/module_utils/models/manage_fabric_group/manage_fabric_group_vxlan_aci.py)
  • New FabricGroupVxlanAciModel + VxlanAciFabricGroupManagementModel
    (single identifier fabric_name, category: fabricGroup, discriminator
    management.type: vxlanAci).
  • Read-only securityGroupStatus is excluded from the argument spec and from
    diff comparison (via to_diff_dict override).
• Enums (plugins/module_utils/models/manage_fabric_group/enums.py)
  • Extended FabricGroupTypeEnum with VXLAN_ACI = "vxlanAci".
  • Added two constrained enums so argspec choices exactly match the API:
    VxlanAciOverlayInterConnectTypeEnum (manual, directPeering — no
    routeServer) and VxlanAciSecurityGroupTagEnum (loose, strict —
    no off).
• Orchestrator (plugins/module_utils/orchestrators/manage_fabric_group_vxlan_aci.py)
  • ManageFabricGroupVxlanAciOrchestrator wires the shared EpManageFabrics*
    endpoints; custom query_all filters on ?category=fabricGroup and
    management.type == "vxlanAci".
• Module (plugins/modules/nd_manage_fabric_group_vxlan_aci.py)
  • Entrypoint with DOCUMENTATION/EXAMPLES/RETURN matching the reduced field set;
    supports merged, replaced, overridden, deleted and check mode.
• Tests
  • Unit: tests/unit/module_utils/endpoints/test_endpoints_api_v1_manage_fabric_group_vxlan_aci.py
    (18 tests — endpoint wiring, query_all filtering, argspec/model behavior).
  • Integration: tests/integration/targets/nd_manage_fabric_group_vxlan_aci/
    (merged create/idempotent/update, replaced, deleted, multi-create).
• Changelog: changelogs/fragments/add_nd_manage_fabric_group_vxlan_aci.yml.

Test Notes

• Unit tests: 18 passed (32 passed with the base VXLAN suite included).
• DOCUMENTATION/EXAMPLES/RETURN blocks parse cleanly; integration + changelog
  YAML validated with yaml.safe_load.
• get_errors clean across all new/changed source and test files.
• Integration tests are written against the live ND Manage API
  (/api/v1/manage/fabrics) and require a reachable ND host in inventory.

Cisco Nexus Dashboard Version

4.2.1

Related ND API Resource Category

• analyze
• infa
• manage
• onemanage
• other

Checklist

• Latest commit is rebased from develop with merge conflicts resolved
• New or updates to documentation has been made accordingly
• Assigned the proper reviewers