Add publishing of content to opendev-website

This organizes content a bit more so that it can be published. We start
with a simple job to publish to the logs server on check and gate jobs.

Change-Id: I6a11e3526a36f793c7f6f6930ab681702ebe4bbc

.zuul.yaml

@@ -1,7 +1,16 @@
+- job:
+    name: opendev-website-build
+    description: |
+      Publishes a draft version of the OpenDev website.
+    success-url: www/
+    run: playbooks/copy-to-logs.yaml
+    nodeset:
+      nodes: []
+
 - project:
     check:
       jobs:
-        - noop
+        - opendev-website-build
     gate:
       jobs:
-        - noop
+        - opendev-website-build

README.txt

@@ -1,3 +1,3 @@
 Html is rendered from Markdown using pandoc:
 
-  pandoc -s index.md -o index.html -c index.css --metadata pagetitle="OpenDev"
+  pandoc -s index.md -o www/index.html -c www/index.css --metadata pagetitle="OpenDev"

playbooks/copy-to-logs.yaml

@@ -0,0 +1,6 @@
+- hosts: localhost
+  tasks:
+    - name: Copy content to logs dir
+      copy:
+        src: "{{ zuul.executor.work_root }}/{{ zuul.projects['git.openstack.org/openstack-infra/opendev-website'].src_dir }}/www"
+        dest: "{{ zuul.executor.log_root }}"