Fix Cisco spine template BGP configuration

- Pass both bgp (flattened) and bgp_profiles (original list) to templates
- Update Cisco spine template to use bgp_profiles instead of bgp
- Cisco template expects list of profile objects with nested structure
- Arista/Juniper templates continue using flattened bgp dict

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: petercrocker

templates/configs/spines/cisco_nxos.j2

@@ -50,7 +50,7 @@ router ospf {{ ospf_config.process_id }}
 {%- endfor %}
 !
 ! BGP Configuration
-{%- for bgp_config in bgp %}
+{%- for bgp_config in bgp_profiles %}
 router bgp {{ bgp_config.local_as.asn }}
   router-id {{ bgp_config.router_id.address.split('/')[0] }}
 {%- if bgp_config.graceful_restart %}

transforms/spine.py

@@ -42,8 +42,8 @@ async def transform(self, data: Any) -> Any:
         # Extract first OSPF config or use empty dict
         ospf = ospf_configs[0] if ospf_configs else {}
 
-        # Restructure BGP data for template
-        # Template expects: bgp.local_as, bgp.router_id, bgp.neighbors
+        # Create both flattened BGP dict (for Arista/Juniper templates)
+        # and pass original bgp_profiles list (for Cisco template)
         bgp = {}
         if bgp_profiles:
             # Get common BGP settings from first profile
@@ -69,7 +69,8 @@ async def transform(self, data: Any) -> Any:
 
         config = {
             "hostname": data.get("name"),
-            "bgp": bgp,
+            "bgp": bgp,  # Flattened dict for Arista/Juniper/SONiC templates
+            "bgp_profiles": bgp_profiles,  # Original list for Cisco template
             "ospf": ospf,
             "interface_roles": get_interface_roles(data.get("interfaces")),
             "loopbacks": get_loopbacks(data.get("interfaces")),