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

Change-Id: I81e23dcfcdcc67d325db7013e983ecceb02d4168
Signed-off-by: Atul Agarwal <Atul.Agarwal@Altran.com>
(cherry picked from commit 98c5ba692c3e0650f3dd7aa49621ca918ef3d6cc)
diff --git a/robot-systest/resources/sa_02-vnf_with_vim_metrics_and_autoscaling_data.py b/robot-systest/resources/sa_02-vnf_with_vim_metrics_and_autoscaling_data.py
index befeb36..15a4477 100644
--- a/robot-systest/resources/sa_02-vnf_with_vim_metrics_and_autoscaling_data.py
+++ b/robot-systest/resources/sa_02-vnf_with_vim_metrics_and_autoscaling_data.py
@@ -23,7 +23,7 @@
 prometheus_poll_timeout = '1 minute'
 # Prometheus metric and threshold
 metric_name = 'osm_cpu_utilization'
-metric_threshold = 60
+metric_threshold = 40
 # Get ${HOME} from local machine
 home = str(Path.home())
 # NS and VNF descriptor package folder