Add http->http redirection for Matrix/Riot

Doing this means that matrix-nginx-proxy now starts
occupying port 80, which necessitates that
SSL renewal happens slightly differently.

roles/matrix-server/tasks/main.yml

@@ -11,22 +11,27 @@
 - include: tasks/setup_ssl.yml
   tags:
     - setup-main
+    - setup-ssl
 
 - include: tasks/setup_postgres.yml
   tags:
     - setup-main
+    - setup-postgres
 
 - include: tasks/setup_synapse.yml
   tags:
     - setup-main
+    - setup-synapse
 
 - include: tasks/setup_riot_web.yml
   tags:
     - setup-main
+    - setup-riot-web
 
 - include: tasks/setup_nginx_proxy.yml
   tags:
     - setup-main
+    - setup-nginx-proxy
 
 - include: tasks/start.yml
   tags: