Fix for bug 1669 -- SA02 robot test fails as threshold not reached

hackfest_basic_metrics_vnf/hackfest_basic_metrics_vnfd.yaml

@@ -25,7 +25,7 @@ vnfd:
           scale-in-relational-operation: LT
           scale-in-threshold: 10
           scale-out-relational-operation: GT
-          scale-out-threshold: 60
+          scale-out-threshold: 40
           vnf-monitoring-param-ref: vnf_cpu_util
         scaling-type: automatic
         threshold-time: 10