roles/nginx/proxy: Reworked proxy to adapt to upstreams

roles/nginx/proxy/defaults/main.yml

@@ -1,5 +1,4 @@
 ---
 
 # domain: example.com
-# backend: 12345 or /example.socket
+# backend_port: 12345 OR backend_socket: /example.socket
-type: port # port / socket

roles/nginx/proxy/meta/main.yml

@@ -4,5 +4,4 @@ allow_duplicates: yes
 
 dependencies:
   - role: acme/certificate
-  - role: "nginx/{{ type }}_upstream"
+  - role: nginx/upstream
-    backend: "{{ backend }}"

roles/nginx/proxy/tasks/main.yml

@@ -1,6 +1,6 @@
 ---
 
-- name: Configure proxy for {{ domain }} to {{ type }} {{ backend }}
+- name: Configure proxy for {{ domain }} to {{ backend_port is defined | ternary(backend_port, backend_socket) }}
   template:
     src: proxy.conf
     dest: "{{ nginx_sites_directory }}/{{ domain }}"