Try a redirect for bodhi robots.txt.

playbooks/include/proxies-redirects.yml

@@ -135,6 +135,13 @@
     regex: /user/(.*)$
     target: https://bodhi.fedoraproject.org/users/$1
 
+  # See https://github.com/fedora-infra/bodhi/issues/495
+  - role: httpd/redirectmatch
+    name: robots-redirect
+    website: bodhi.fedoraproject.org
+    regex: /robots.txt$
+    target: https://apps.fedoraproject.org/robots.txt
+
   - role: httpd/redirect
     name: get-fedora
     website: get.fedoraproject.org