Add variable project_version to horizon_translations_update

this will support to pull different versions from zanata instead
only master.
Patch is related to https://review.openstack.org/#/c/545276/

Change-Id: I61209ad3dc785e8134ef09b934ba9800c3d436f1

defaults/main.yml

@@ -323,6 +323,11 @@ horizon_optional_pip_packages: []
 # but should otherwise be left as False.
 horizon_translations_update: False
 
+# This variable is used to define the version of the project
+# (horizon) to pull from Zanata. Default value is master,
+# other possibly values are stable/pike, stable/queens...
+horizon_translations_project_version: master
+
 # This variable is used by the repo_build process to determine
 # which host group to check for members of before building the
 # pip packages required by this role. The value is picked up

tasks/horizon_translations_update.yml

@@ -14,7 +14,7 @@
 # limitations under the License.
 
 - name: Perform a Horizon Zanata Pull Catalog
-  command: "{{ horizon_bin }}/horizon-manage.py pull_catalog"
+  command: "{{ horizon_bin }}/horizon-manage.py pull_catalog -v {{ horizon_translations_project_version | replace('/', '-') }}"
   args:
     chdir: "{{ horizon_lib_dir }}/"
   changed_when: false