Rename tempest result files

To provide visibility of testrepository subunit results
- Generated by tempest run - to the gate logstash [1] and
further processing that allows OSA project to be displayed under
health dashboard [2].

The subunit file should be always collected - even when test cases fails -

Files should be zipped and named: **/*testr_results.html.gz and
**/*testrepository.subunit.gz. So that publisher [3] picks them up

[1] https://github.com/openstack-infra/system-config/blob/master/modules/openstack_project/files/logstash/jenkins-log-client.yaml#L14
[2] http://status.openstack.org/openstack-health/#/
[3] https://github.com/openstack-infra/project-config/blob/master/jenkins/jobs/macros.yaml#L975

Change-Id: Ia06389d8724f23283f72dea3b055d0cb43b0be32

tasks/tempest_run.yml

@@ -57,7 +57,7 @@
   - name: Generate html subunit results
     shell: |
       . {{ tempest_venv_bin }}/activate
-      subunit2html {{ tempest_log_dir }}/testrepository.subunit {{ tempest_log_dir }}/tempest_results.html
+      subunit2html {{ tempest_log_dir }}/testrepository.subunit {{ tempest_log_dir }}/testr_results.html
     args:
       chdir: "{{ tempest_venv_bin | dirname }}/workspace"
       executable: /bin/bash

tests/test-tempest-functional.yml

@@ -38,7 +38,7 @@
         that: "item in _results_list.stdout_lines"
         msg: "{{ item }} must be present in {{ tempest_log_dir }}"
       with_items:
-        - "tempest_results.html"
+        - "testr_results.html"
         - "tempest_results.xml"
         - "testrepository.subunit"