Collect testrepository.subunit.gz for translations

The show up in openstack-health, we need to publish the subunit file.
The file is written by the subunit files, so only publish it.

Change-Id: Ia2a4060c7e6ae3a5f9b8a8e8540c1d2c331850b1

playbooks/translation/propose-translation-update.yaml

@@ -9,3 +9,7 @@
       command: "{{ ansible_user_dir }}/scripts/propose_translation_update.sh {{ zuul.project.short_name }} {{ zuul.branch }} {{ zuul.job }}"
       args:
         chdir: "src/{{ zuul.project.canonical_name }}"
+
+- hosts: all
+  roles:
+    - fetch-translations-stestr-output

playbooks/translation/upstream-translation-update.yaml

@@ -13,3 +13,4 @@
 - hosts: all
   roles:
     - fetch-translation-output
+    - fetch-translations-stestr-output

roles/fetch-translations-stestr-output/README.rst

@@ -0,0 +1,12 @@
+Collect stestr output from translation jobs
+
+This role collects only the testrepository.subunit file which has to
+be compressed already.
+
+**Role Variables**
+
+.. zuul:rolevar:: zuul_work_dir
+   :default: {{ zuul.project.src_dir }}
+
+   Directory where ``testrepository.subunit.gz`` file is.
+

roles/fetch-translations-stestr-output/defaults/main.yaml

@@ -0,0 +1,2 @@
+---
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/fetch-translations-stestr-output/tasks/main.yaml

@@ -0,0 +1,13 @@
+- name: Register testrepository.subunit file
+  stat:
+    path: "{{ zuul_work_dir }}/testrepository.subunit.gz"
+  register: subunit
+
+- name: Collect test-results
+  synchronize:
+    dest: "{{ zuul.executor.log_root }}"
+    mode: pull
+    src: "{{ zuul_work_dir }}/testrepository.subunit.gz"
+    verify_host: true
+  when:
+    - subunit.stat.exists