Set VM as reflector for LT2/FT2 (sonic-net#19238)

* Set VM as reflector for LT2/FT2

Signed-off-by: opcoder0 <[email protected]>

Author: bingwang-ms

ansible/roles/eos/templates/t0-leaf.j2

@@ -106,7 +106,10 @@ router bgp {{ host['bgp']['asn'] }}
 {% for remote_ip in remote_ips %}
  neighbor {{ remote_ip }} remote-as {{ asn }}
  neighbor {{ remote_ip }} description {{ asn }}
- neighbor {{ remote_ip }} next-hop-self
+{# set LT2/FT2 as reflector to advertise route to DUT #}
+{% if props.swrole is defined and props.swrole in ("lowerspine", "fabricspine") %}
+ neighbor {{ remote_ip }} route-reflector-client
+{% endif %}
 {% if remote_ip | ipv6 %}
  address-family ipv6
   neighbor {{ remote_ip }} activate