Add publications index job.

Change-Id: Icd841aa28f819df15d389abcdc5cb37ff33d4354
Reviewed-on: https://review.openstack.org/33563
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins

modules/openstack_project/files/jenkins_job_builder/config/infra-publications.yaml

@@ -15,3 +15,25 @@
           remove-prefix: ''
           excludes: ''
       - console-log-post
+
+- job:
+    name: infra-publications-publish-index
+    concurrent: false
+    node: precise
+
+    builders:
+      - gerrit-git-prep
+      - shell: |
+          #!/bin/bash -xe
+          git reset --hard remotes/origin/master
+          git clean -x -f -d -q
+          ./make-index
+
+    publishers:
+      - ftp:
+          site: docs.openstack.org
+          source: 'output/**'
+          target: 'www/infra/publications/'
+          remove-prefix: 'output/'
+          excludes: ''
+      - console-log-post

modules/openstack_project/files/zuul/layout.yaml

@@ -280,6 +280,7 @@ projects:
       - gate-noop
     post:
       - infra-publications-publish
+      - infra-publications-publish-index
 
   - name: openstack-infra/puppet-apparmor
     check: