add "ring_thread_enabled": "true" in "DEVICE_METADATA|localhost" in 7nodes_cisco (sonic-net#17078)

What is the motivation for this PR?
ring buffer feature should be able to get turned on/off by a flag in configuration

How did you do it?
Add a field "ring_thread_enabled" in "DEVICE_METADATA"| "localhost" table

How did you verify/test it?
sonic-net/sonic-buildimage#19652

Author: a114j0y

ansible/vars/configdb_jsons/7nodes_cisco/P1.json

@@ -116,7 +116,8 @@
             "nexthop_group" : "enabled",
             "frr_mgmt_framework_config": "true",
             "docker_routing_config_mode": "unified",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {

ansible/vars/configdb_jsons/7nodes_cisco/P2.json

@@ -101,7 +101,8 @@
             "nexthop_group" : "enabled",
             "frr_mgmt_framework_config": "true",
             "docker_routing_config_mode": "unified",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {

ansible/vars/configdb_jsons/7nodes_cisco/P3.json

@@ -116,7 +116,8 @@
             "nexthop_group" : "enabled",
             "frr_mgmt_framework_config": "true",
             "docker_routing_config_mode": "unified",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {

ansible/vars/configdb_jsons/7nodes_cisco/P4.json

@@ -101,7 +101,8 @@
             "nexthop_group" : "enabled",
             "frr_mgmt_framework_config": "true",
             "docker_routing_config_mode": "unified",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {

ansible/vars/configdb_jsons/7nodes_cisco/PE1.json

@@ -130,7 +130,8 @@
             "docker_routing_config_mode": "unified",
             "frr_mgmt_framework_config": "true",
             "nexthop_group" : "enabled",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {

ansible/vars/configdb_jsons/7nodes_cisco/PE2.json

@@ -130,7 +130,8 @@
             "frr_mgmt_framework_config": "true",
             "docker_routing_config_mode": "unified",
             "nexthop_group" : "enabled",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {

ansible/vars/configdb_jsons/7nodes_cisco/PE3.json

@@ -130,7 +130,8 @@
             "frr_mgmt_framework_config": "true",
             "docker_routing_config_mode": "unified",
             "nexthop_group" : "enabled",
-            "type": "LeafRouter"
+            "type": "LeafRouter",
+            "ring_thread_enabled": "true"
         }
     },
     "INTERFACE": {