Tempest: add option to execute cleanup always

This PS makes to control cleanup action.
If there are FAILED cases, temepest-test returns non-zero code.
_run-tests.sh.tpl exit immediately without cleanup.
if set Values.conf.cleanup.force to true, cleanup is excuted always.

Change-Id: Ie2ffee8faa9561f8acb4dc762fcfa9a282477f50
Closes-Bug: #1788076

tempest/templates/bin/_run-tests.sh.tpl

@@ -20,6 +20,10 @@ set -ex
 
 tempest cleanup --init-saved-state
 
+if [ "true" == "{{- .Values.conf.cleanup.force -}}" ]; then
+trap "tempest cleanup; exit" 1 ERR
+fi
+
 {{ .Values.conf.script }}
 
 tempest cleanup

tempest/values.yaml

@@ -198,6 +198,8 @@ conf:
     volume-feature-enabled:
       api_v1: False
       api_v3: True
+  cleanup:
+    force: false
 
 pvc:
   enabled: true