Added graceful restart

src/sonic-yang-models/yang-events/sonic-events-bgp.yang

@@ -47,6 +47,34 @@ module sonic-events-bgp {
         uses evtcmn:sonic-events-cmn;
     }
 
+    container bgp-restart {
+        oc-alarm-types:MINOR
+
+        description "
+            Declares an event for BGP state for a neighbor IP going up/down.;
+
+        leaf is-all {
+            type boolean;
+            description "true - if restart is for all neighbors";
+        }
+
+        leaf ip {
+            type inet:ip-address;
+            description "IP of neighbor, if restart is for a neighbor";
+        }
+
+        leaf status {
+            type enumeration {
+                enum "up";
+                enum "down";
+
+            }
+            description "Provides the status as up (true) or down (false)";
+        }
+
+        uses evtcmn:sonic-events-cmn;
+    }
+
     container notification {
         oc-alarm-types:MAJOR
 
@@ -78,6 +106,7 @@ module sonic-events-bgp {
         leaf is-sent {
             type boolean;
             description "true - if this notification was for sent messages; false if it was for received.";
+        }
 
         uses evtcmn:sonic-events-cmn;
     }