Keep Mongo operations online across Vault credential rotation

dev/config/bff.yml

@@ -6,7 +6,12 @@ http_server:
 database:
   driver: mongodb
   settings:
-    uri_env: SXCHNGE_MONGO_URI
+    uri: mongodb://mongo:27017/sxchnge?authSource=admin&replicaSet=rs0
+    vault:
+      address: http://vault:8200
+      role: bff
+      role_id_file: /etc/agent/role-id
+      secret_id_file: /etc/agent/secret-id
     database: sxchnge
 api:
   middleware: