[bgp] Enable BGP Graceful Restart based on device role (#9486)

What I did:
Updated Jinja Template to enable BGP Graceful Restart based on device role. By default it will be enable only if the device role type is TorRouter.

Why I did:-
By default FRR is configured in Graceful Helper mode. Graceful Restart is needed on T0/TorRouter only since the device can go for warm-reboot. For T1/LeafRouter it need to be in Helper mode only

dockers/docker-fpm-frr/frr/bgpd/bgpd.main.conf.j2

@@ -67,7 +67,7 @@ router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
   bgp bestpath as-path multipath-relax
 {% endif %}
 !
-{% if constants.bgp.graceful_restart.enabled is defined and constants.bgp.graceful_restart.enabled %}
+{% if constants.bgp.graceful_restart.enabled is defined and constants.bgp.graceful_restart.enabled and DEVICE_METADATA['localhost']['type'] == 'ToRRouter' %}
   bgp graceful-restart restart-time {{ constants.bgp.graceful_restart.restart_time | default(240) }}
   bgp graceful-restart
   bgp graceful-restart preserve-fw-state

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.conf.j2/all.json

@@ -3,7 +3,8 @@
         "localhost": {
             "hostname": "new_hostname",
             "bgp_asn": "55555",
-            "sub_role": "FrontEnd"
+            "sub_role": "FrontEnd",
+            "type": "ToRRouter"
         }
     },
     "LOOPBACK_INTERFACE": {

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.main.conf.j2/all.json

@@ -2,7 +2,8 @@
     "DEVICE_METADATA": {
         "localhost": {
             "bgp_asn": "55555",
-            "sub_role": "FrontEnd"
+            "sub_role": "FrontEnd",
+            "type": "ToRRouter"
         }
     },
     "LOOPBACK_INTERFACE": {

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.main.conf.j2/defaults.json

@@ -2,7 +2,8 @@
     "DEVICE_METADATA": {
         "localhost": {
             "bgp_asn": "55555",
-            "sub_role": "FrontEnd"
+            "sub_role": "FrontEnd",
+            "type": "ToRRouter"
         }
     },
     "LOOPBACK_INTERFACE": {

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.main.conf.j2/packet_chassis.conf

@@ -39,10 +39,6 @@ router bgp 55555
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 55.55.55.56
 !

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.main.conf.j2/packet_chassis.json

@@ -3,7 +3,8 @@
         "localhost": {
             "bgp_asn": "55555",
             "sub_role": "FrontEnd",
-            "switch_type": "chassis-packet"
+            "switch_type": "chassis-packet",
+            "type": "SpineRouter"
         }
     },
     "LOOPBACK_INTERFACE": {

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.main.conf.j2/voq_chassis.conf

@@ -39,10 +39,6 @@ router bgp 55555
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 55.55.55.56
 !

src/sonic-bgpcfgd/tests/data/sonic-cfggen/bgpd.main.conf.j2/voq_chassis.json

@@ -3,7 +3,8 @@
         "localhost": {
             "bgp_asn": "55555",
             "sub_role": "",
-            "switch_type": "voq"
+            "switch_type": "voq",
+            "type": "SpineRouter"
         }
     },
     "LOOPBACK_INTERFACE": {

src/sonic-bgpcfgd/tests/data/sonic-cfggen/frr.conf.j2/all.json

@@ -3,7 +3,8 @@
         "localhost": {
             "bgp_asn": "55555",
             "hostname": "test_hostname",
-            "sub_role": "FrontEnd"
+            "sub_role": "FrontEnd",
+            "type": "ToRRouter"
         }
     },
     "INTERFACE": {

src/sonic-config-engine/tests/sample_output/py2/bgpd_frr_backend_asic.conf

@@ -58,10 +58,6 @@ router bgp 65100
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 8.0.0.5
 !

src/sonic-config-engine/tests/sample_output/py2/bgpd_frr_frontend_asic.conf

@@ -58,10 +58,6 @@ router bgp 65100
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 10.1.0.32
 !

src/sonic-config-engine/tests/sample_output/py2/t2-chassis-fe-bgpd.conf

@@ -63,10 +63,6 @@ router bgp 4000
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 4.0.0.0
 !

src/sonic-config-engine/tests/sample_output/py3/bgpd_frr_backend_asic.conf

@@ -58,10 +58,6 @@ router bgp 65100
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 8.0.0.5
 !

src/sonic-config-engine/tests/sample_output/py3/bgpd_frr_frontend_asic.conf

@@ -58,10 +58,6 @@ router bgp 65100
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 10.1.0.32
 !

src/sonic-config-engine/tests/sample_output/py3/t2-chassis-fe-bgpd.conf

@@ -63,10 +63,6 @@ router bgp 4000
 !
   bgp bestpath as-path multipath-relax
 !
-  bgp graceful-restart restart-time 240
-  bgp graceful-restart
-  bgp graceful-restart preserve-fw-state
-  bgp graceful-restart select-defer-time 45
 !
   bgp router-id 4.0.0.0
 !