Add missing config

Author: jiangpengcheng

tests/src/test/resources/application.conf.j2

@@ -63,6 +63,12 @@ whisk {
         }
     }
 
+    loadbalancer {
+        fpc {
+            use-perMin-throttles = false
+        }
+    }
+
     cosmosdb {
         endpoint   = ${?COSMOSDB_ENDPOINT}
         key        = ${?COSMOSDB_KEY}