Replace ingress proxy with nginx

This enables HTTPS redirecting at it too much more easily, and matches the gateway configuration.

Requires using upstream versions of nginx to enable https://nginx.org/en/docs/stream/ngx_stream_realip_module.html

ansible/main.yml

@@ -58,6 +58,8 @@
   roles:
     - role: chmduquesne.iptables_persistent
       become: true
+    - role: nginxinc.nginx  # The nginx in debian's repos is very old
+      become: true
     - ingress
     - nebula