nginx/proxy: Moved directives var to defaults

Overwrites directives in default of following roles

roles/nginx/proxy/defaults/main.yml

@@ -3,4 +3,22 @@
 # domain: example.com
 # backend_port: 12345 OR backend_socket: /example.socket
 # upstream_name (optional)
+
+# directives for proxy forwarding, prefer additional_directives
+directives: |
+  {{ additional_directives }}
+
+  location / {
+    proxy_pass http://{{ upstream_name }};
+    proxy_read_timeout 300;
+    proxy_connect_timeout 300;
+    proxy_http_version 1.1;
+    proxy_set_header Connection $connection_upgrade;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+  }
+
 additional_directives: ""

roles/nginx/proxy/vars/main.yml

@@ -1,17 +0,0 @@
----
-
-directives: |
-  {{ additional_directives }}
-
-  location / {
-    proxy_pass http://{{ upstream_name }};
-    proxy_read_timeout 300;
-    proxy_connect_timeout 300;
-    proxy_http_version 1.1;
-    proxy_set_header Connection $connection_upgrade;
-    proxy_set_header Upgrade $http_upgrade;
-    proxy_set_header Host $host;
-    proxy_set_header X-Real-IP $remote_addr;
-    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header X-Forwarded-Proto $scheme;
-  }