Start dev (#4)

* Add Netbox configuration and plugins
* Add Containerlab topology 
* Add template
* Update Documentation

templates/leaves.j2

@@ -0,0 +1,44 @@
+{# Interface Configuration #}
+{% for interface in device.interfaces.all() %}
+interface {{ interface.name }}
+{%- if interface.description %}
+description {{ interface.description }}
+{%- endif %}
+no shutdown
+no switchport
+ip address {{ ipam.IPAddress.objects.get(assigned_object_id=interface.id).address }}
+mtu 9214
+!
+{% endfor %}
+
+{# BGP Configuration #}
+{% set loopback_interface = device.interfaces.get(name='Loopback0') %}
+{% set router_id = ipam.IPAddress.objects.get(assigned_object_id=loopback_interface.id).address %}
+router bgp {{ device.custom_field_data.ASN }}
+router-id {{ router_id }}
+maximum-paths 4 ecmp 4
+neighbor SPINE_GROUP peer group
+neighbor SPINE_GROUP allowas-in 1
+neighbor SPINE_GROUP ebgp-multihop 4
+neighbor SPINE_GROUP send-community extended
+neighbor SPINE_GROUP maximum-routes 12000
+{%- for interface in device.interfaces.all() %}
+    {%- if interface.connected_endpoints and interface.name != 'Ethernet3' %}
+        {%- for remote_interface in interface.connected_endpoints %}
+            {%- set remote_ip = ipam.IPAddress.objects.get(assigned_object_id=remote_interface.id) %}
+neighbor {{ remote_ip.address }} peer group SPINE_GROUP
+neighbor {{ remote_ip.address }} remote-as {{ remote_interface.device.custom_field_data.ASN }}
+        {%- endfor %}
+    {%- endif %}
+{%- endfor %}
+!
+address-family ipv4
+{%- for interface in device.interfaces.all() %}
+    {%- if interface.connected_endpoints and interface.name != 'Ethernet3' %}
+        {%- for remote_interface in interface.connected_endpoints %}
+            {%- set remote_ip = ipam.IPAddress.objects.get(assigned_object_id=remote_interface.id) %}
+neighbor {{ remote_ip.address }} activate
+        {%- endfor %}
+    {%- endif %}
+{%- endfor %}
+!