Cherry pick to 202305 - Enable fib suppress for leafrouter by default #17101

Why I did it
Cherry pick #17072

Work item tracking
Microsoft ADO (25564723):
How I did it
How to verify it

Author: StormLiangMS

src/sonic-config-engine/minigraph.py

@@ -40,6 +40,8 @@
 backend_device_types = ['BackEndToRRouter', 'BackEndLeafRouter']
 console_device_types = ['MgmtTsToR']
 dhcp_server_enabled_device_types = ['BmcMgmtToRRouter']
+leafrouter_device_types = ['LeafRouter']
+
 VLAN_SUB_INTERFACE_SEPARATOR = '.'
 VLAN_SUB_INTERFACE_VLAN_ID = '10'
 
@@ -2067,6 +2069,10 @@ def parse_xml(filename, platform=None, port_config_file=None, asic_name=None, hw
     if current_device and current_device['type'] in dhcp_server_enabled_device_types:
         results['DEVICE_METADATA']['localhost']['dhcp_server'] = 'enabled'
 
+    # Enable bgp-suppress-fib by default for leafrouter
+    if current_device and current_device['type'] in leafrouter_device_types:
+        results['DEVICE_METADATA']['localhost']['suppress-fib-pending'] = 'enabled'
+
     return results
 
 def get_tunnel_entries(tunnel_intfs, tunnel_intfs_qos_remap_config, lo_intfs, tunnel_qos_remap, mux_tunnel_name, peer_switch_ip):