Use a static Apache config for registries

We should be able to accomplish the registry redirect using a single
rewrite rule and a single empty file.

Change-Id: I85a09d19bbbad1ba7078076644a3c5cea4d8aeb8

playbooks/roles/static/files/50-registry.zuul-ci.org.conf

@@ -27,16 +27,15 @@
     SSLCertificateKeyFile /etc/letsencrypt-certs/registry.zuul-ci.org/registry.zuul-ci.org.key
     SSLCertificateChainFile /etc/letsencrypt-certs/registry.zuul-ci.org/ca.cer
 
-    DocumentRoot /afs/openstack.org/project/zuul-ci.org/registry
+    DocumentRoot /var/www/registry
-    <Directory /afs/openstack.org/project/zuul-ci.org/registry>
+    <Directory /var/www/registry>
         Options Indexes FollowSymLinks MultiViews
         Require all granted
         AllowOverride None
-        # Allow mod_rewrite rules
-        AllowOverrideList Redirect RedirectMatch
-        ErrorDocument 404 /errorpage.html
     </Directory>
 
+    RewriteRule ^/v2/(.*)$ https://quay.io/v2/corvus/$1 [R=302,L]
+
     ErrorLog /var/log/apache2/registry.zuul-ci.org_error.log
     LogLevel warn
     CustomLog /var/log/apache2/registry.zuul-ci.org_access.log combined

playbooks/roles/static/tasks/main.yaml

@@ -85,6 +85,22 @@
   args:
     removes: /etc/apache2/sites-enabled/000-default.conf
 
+- name: Make a local empty directory for registry roots
+  file:
+    state: directory
+    path: /var/www/registry/v2
+    mode: 0755
+    owner: root
+    group: root
+
+- name: Make a local empty index file for registry roots
+  copy:
+    content: ""
+    dest: /var/www/registry/v2/index.html
+    mode: 0644
+    owner: root
+    group: root
+
 - name: Enable sites
   include_tasks: enable_site.yaml
   loop: