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/roles/ingress/tasks/nginx.yml

@@ -0,0 +1,19 @@
+- name: Install nginx
+  package:
+    name: nginx
+  become: true
+
+- name: Nginx config
+  template:
+    src: files/nginx.conf
+    dest: /etc/nginx/nginx.conf
+    validate: nginx -t -c %s
+    mode: "0644"
+  become: true
+  notify: restart nginx
+
+- name: Enable nginx
+  service:
+    name: nginx
+    enabled: true
+  become: true