Host a devstack.org redirect on static

This provides a hollow "devstack.org" vhost as a permanent redirect
to the docs.openstack.org/developer/devstack site. It also aliases
*.devstack.org to the same vhost.

Change-Id: Ib96e4d4e21bbdd961eb32529c66acf750d79bec5

modules/openstack_project/manifests/static.pp

@@ -243,4 +243,15 @@ class openstack_project::static (
     require => [File['/srv/static/specs'],
                 $::project_config::config_dir],
   }
+
+  ###########################################################
+  # legacy devstack.org site redirect
+
+  apache::vhost { 'devstack.org':
+    port          => 80,
+    priority      => '50',
+    docroot       => 'MEANINGLESS_ARGUMENT',
+    serveraliases => ['*.devstack.org'],
+    template      => 'openstack_project/devstack.vhost.erb',
+  }
 }

modules/openstack_project/templates/devstack.vhost.erb

@@ -0,0 +1,21 @@
+# ************************************
+# Managed by Puppet
+# ************************************
+
+NameVirtualHost <%= @vhost_name %>:<%= @port %>
+<VirtualHost <%= @vhost_name %>:<%= @port %>>
+  ServerName <%= @srvname %>
+<% if @serveraliases.is_a? Array -%>
+<% @serveraliases.each do |name| -%><%= " ServerAlias #{name}\n" %><% end -%>
+<% elsif @serveraliases != '' -%>
+<%= " ServerAlias #{@serveraliases}" %>
+<% end -%>
+
+  RewriteEngine On
+  RewriteRule ^/(.*) http://docs.openstack.org/developer/devstack/$1 [last,redirect=permanent]
+
+  ErrorLog /var/log/apache2/<%= @name %>_error.log
+  LogLevel warn
+  CustomLog /var/log/apache2/<%= @name %>_access.log combined
+  ServerSignature Off
+</VirtualHost>