Add and enable translation jobs for i18n repo

I18n team wants to support translations for I18n contributor guide
: https://docs.openstack.org/developer/i18n/ .
This patch adds and enables translation jobs for I18n contributor guide
with i18n as Zanata project name.

Change-Id: I89e3fbcdf0683aa859ef56f4ac24f175351ee355
Implements: blueprint i18n-guide-translation

gerrit/projects.yaml

@@ -4617,6 +4617,8 @@
 - project: openstack/i18n
   groups:
     - openstack-i18n
+  options:
+    - translate
   description: Utilities, assets and configrations used by I18n team
 - project: openstack/i18n-specs
   groups:

jenkins/jobs/projects.yaml

@@ -5449,6 +5449,7 @@
       - gate-{name}-docs-{node}:
           node: ubuntu-xenial
       - gate-{name}-requirements
+      - translation-jobs
 
 - project:
     name: i18n-specs

jenkins/scripts/common_translation_update.sh

@@ -247,6 +247,21 @@ function setup_training_guides {
         -f zanata.xml
 }
 
+# Setup a i18n project for Zanata
+function setup_i18n {
+    local project=i18n
+    local version=${1:-master}
+
+    # Update the .pot file
+    tox -e generatepot
+
+    /usr/local/jenkins/slave_scripts/create-zanata-xml.py \
+        -p $project -v $version \
+        --srcdir doc/source/locale \
+        --txdir doc/source/locale \
+        -f zanata.xml
+}
+
 # Setup a ReactJS project for Zanata
 function setup_reactjs_project {
     local project=$1

jenkins/scripts/propose_translation_update.sh

@@ -106,6 +106,19 @@ function propose_training_guides {
     git_add_po_files doc/upstream-training/source/locale
 }
 
+# Propose updates for i18n
+function propose_i18n {
+
+    # Pull updated translations from Zanata.
+    pull_from_zanata "$PROJECT"
+
+    # Cleanup po and pot files
+    cleanup_module "doc"
+
+    # Add all changed files to git
+    git_add_po_files doc/source/locale
+}
+
 
 # Propose updates for python and django projects
 function propose_python_django {
@@ -264,6 +277,10 @@ case "$PROJECT" in
         setup_training_guides "$ZANATA_VERSION"
         propose_training_guides
         ;;
+    i18n)
+        setup_i18n "$ZANATA_VERSION"
+        propose_i18n
+        ;;
     tripleo-ui)
         setup_reactjs_project "$PROJECT" "$ZANATA_VERSION"
         propose_reactjs

jenkins/scripts/upstream_translation_update.sh

@@ -68,6 +68,10 @@ case "$PROJECT" in
         setup_training_guides "$ZANATA_VERSION"
         ALL_MODULES="doc"
         ;;
+    i18n)
+        setup_i18n "$ZANATA_VERSION"
+        ALL_MODULES="doc"
+        ;;
     tripleo-ui)
         setup_reactjs_project "$PROJECT" "$ZANATA_VERSION"
         # The pot file is generated in the ./i18n directory

zuul/layout.yaml

@@ -10757,6 +10757,7 @@ projects:
   - name: openstack/i18n
     template:
       - name: merge-check
+      - name: translation-jobs
       - name: check-requirements
       - name: openstack-server-publish-jobs
     check: