Switch openQA stg to use balancer reverse proxying

This should, we hope, make websockets proxying work right.
@puiterwijk says he eventually wants to move everything to this
system to get haproxy out of the loop in any case.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

playbooks/include/proxies-reverseproxy.yml

@@ -323,6 +323,12 @@
     localpath: /
     proxyurl: http://localhost:10044
 
+  - role: httpd/reverseproxy
+    website: openqa.stg.fedoraproject.org
+    destname: openqa
+    balancer_name: openqa-stg
+    balancer_members: ['openqa-stg01.qa.fedoraproject.org:80']
+
   - role: httpd/reverseproxy
     website: apps.fedoraproject.org
     destname: autocloud

playbooks/include/proxies-websites.yml

@@ -757,7 +757,11 @@
   - role: httpd/website
     site_name: openqa.fedoraproject.org
     cert_name: "{{wildcard_cert_name}}"
-    server_aliases: [openqa.stg.fedoraproject.org]
+    sslonly: true
+
+  - role: httpd/website
+    site_name: openqa.stg.fedoraproject.org
+    cert_name: "{{wildcard_cert_name}}"
     sslonly: true
 
   - role: httpd/website