roles/archweb: Create domain redirects for the domains that point to specific archweb sub urls.

roles/archweb/defaults/main.yml

 ---
 archweb_dir: '/srv/http/archweb'
 archweb_domain: 'www.archlinux.org'
-archweb_alternate_domains: ['archlinux.org']
+archweb_alternate_domains: ['archlinux.org', 'master-key.archlinux.org', 'dev.archlinux.org', 'packages.archlinux.org']
+archweb_domains_redirects:
+        'master-key.archlinux.org': '/master-keys'
+        'dev.archlinux.org': '/'
+        'packages.archlinux.org': '/packages'
 archweb_site: true
 archweb_mirrorcheck: false
 archweb_mirrorresolv: false

roles/archweb/templates/nginx.d.conf.j2

+
 upstream archweb {
     server unix:///run/uwsgi/archweb.sock;
 }
@@ -32,7 +33,12 @@ server {
     ssl_trusted_certificate /etc/letsencrypt/live/{{ archweb_domain }}/chain.pem;
 
     location / {
-        rewrite ^(.*) https://{{ archweb_domain }}$1 permanent;
+        rewrite ^(.*) https://{{ archweb_domain }}
+        {%- if archweb_domains_redirects -%}
+            {{ archweb_domains_redirects[domain]|default('$1') }}
+        {%- else -%}
+           $1
+        {%- endif %} permanent;
     }
 }
 {% endfor %}