Fix gabbi tests

When the tests have been migrated to this repository, the gabbi test
generates have never raise error...

This change fixes that.

It also fixes tests that doesn't pass anymore.
It removes useless stack downscaling,  because it takes too many times
for no additional value (alarm update/metric update are tested by other
tests).

Change-Id: I09cd0569f90e873cf4b7f05ec9c14496c9551fcc
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 1507bd3..c9cbea7 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
@@ -31,7 +31,7 @@
 }
 
 function generate_telemetry_report(){
-    set +x
+    set -x
     set +e
 
     echo "* Message queue status:"
@@ -54,7 +54,6 @@
         echo "* Gnocchi instance detail:"
         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
@@ -94,6 +93,7 @@
 sudo chown -R tempest:stack $BASE/data/tempest
 cd $BASE/new/tempest
 sudo -H -u tempest tox -evenv-tempest -- pip install /opt/stack/new/telemetry-tempest-plugin
+sudo -H -u tempest tox -evenv-tempest -- pip install /opt/stack/new/heat-tempest-plugin
 echo "Checking installed Tempest plugins:"
 sudo -H -u tempest tox -evenv-tempest -- tempest list-plugins
 set +e