websites: Disable indexing of alt.fp-o/cloud & fix redirect

alt.fpo/en/cloud is still the first link to pop up on search engine and
the current redirect only works with /cloud.
This commit fix the redirect, and prevent this old page to be indexed.

playbooks/include/proxies-redirects.yml

@@ -874,7 +874,7 @@
   - role: httpd/redirectmatch
     shortname: 00-cloud-redirect
     website: alt.fedoraproject.org
-    regex: ^/cloud
+    regex: ^.*/cloud
     target: https://fedoraproject.org/cloud/
     tags:
     - cloud

roles/httpd/website/templates/robots/alt.fedoraproject.org-robots.txt

@@ -0,0 +1,4 @@
+User-agent: *
+Crawl-delay: 1
+
+Disallow: /*/cloud/