Move the up-transitions leaf from the async and echo sub-containers i…

…nto the state container. (#1252)

* Move the up-transitions leaf into the state container.

release/models/bfd/openconfig-bfd.yang

@@ -26,7 +26,14 @@ module openconfig-bfd {
     "An OpenConfig model of Bi-Directional Forwarding Detection (BFD)
     configuration and operational state.";
 
-  oc-ext:openconfig-version "0.3.1";
+  oc-ext:openconfig-version "0.4.0";
+
+  revision "2025-02-05" {
+    description
+      "Move the up-transitions leaf from the async and echo
+       sub-containers into the state container.";
+    reference "0.4.0";
+ }
 
   revision "2024-12-16" {
     description
@@ -287,7 +294,6 @@ module openconfig-bfd {
     }
 
     leaf transmitted-packets {
-      // TODO: looks to be unsupported on JUNOS
       type uint64;
       description
         "The number of packets that have been transmitted
@@ -303,11 +309,15 @@ module openconfig-bfd {
     }
 
     leaf up-transitions {
-      // TODO: looks to only be supported in SROS
+      status deprecated;
       type uint64;
       description
         "The number of times that the adjacency with the neighbor
-        has transitioned into the up state.";
+        has transitioned into the up state.
+
+        This leaf is deprecated and will be replaced by a single
+        up-transitions leaf in state container. New path:
+        /bfd/interfaces/interface/peers/peer/state/up-transitions.";
     }
   }
 
@@ -345,6 +355,14 @@ module openconfig-bfd {
         out of the UP state.";
     }
 
+    leaf up-transitions {
+      // TODO: looks to only be supported in SROS
+      type uint64;
+      description
+        "The number of times that the adjacency with the neighbor
+        has transitioned into the up state.";
+    }
+
     leaf local-discriminator {
       type string;
       description