AETHER-2517: Add Prometheus URL to connectivity service

Change-Id: If1df309c79f0d6023d60a069a393ef7b8483d792
diff --git a/config-models/aether-4.x/files/aether-4.0.0.tree b/config-models/aether-4.x/files/aether-4.0.0.tree
index 651820d..735ce23 100644
--- a/config-models/aether-4.x/files/aether-4.0.0.tree
+++ b/config-models/aether-4.x/files/aether-4.0.0.tree
@@ -19,13 +19,14 @@
 module: onf-connectivity-service
   +--rw connectivity-service
      +--rw connectivity-service* [id]
-        +--rw id                  connectivity-service-id
-        +--rw display-name?       string
-        +--rw description?        at:description
-        +--rw spgwc-endpoint?     inet:uri
-        +--rw hss-endpoint?       inet:uri
-        +--rw pcrf-endpoint?      inet:uri
-        +--rw core-5g-endpoint?   inet:uri
+        +--rw id                    connectivity-service-id
+        +--rw display-name?         string
+        +--rw description?          at:description
+        +--rw spgwc-endpoint?       inet:uri
+        +--rw hss-endpoint?         inet:uri
+        +--rw pcrf-endpoint?        inet:uri
+        +--rw core-5g-endpoint?     inet:uri
+        +--rw acc-prometheus-url?   inet:uri
 
 module: onf-device-group
   +--rw device-group