Allow to use environment variable to override some metric values

Change-Id: Ifd1d04ce813028f115c19bc983e7dd1e63c6f8a5
diff --git a/playbooks/legacy/telemetry-dsvm-integration-tempest-plugin/post_test_hook.sh b/playbooks/legacy/telemetry-dsvm-integration-tempest-plugin/post_test_hook.sh
index 624d62e..1507bd3 100755
--- a/playbooks/legacy/telemetry-dsvm-integration-tempest-plugin/post_test_hook.sh
+++ b/playbooks/legacy/telemetry-dsvm-integration-tempest-plugin/post_test_hook.sh
@@ -55,6 +55,8 @@
         gnocchi resource show -t instance $instance_id
         echo "* Gnocchi measures for instance ${instance_id}:"
         gnocchi measures show -r $instance_id cpu_util
+        gnocchi metric show -r $instance_id cpu
+        gnocchi --debug measures show -r $instance_id --aggregation rate:mean cpu
     done
 
     gnocchi status