add nginx headers to forward real client IPs

Signed-off-by: Jakub Sokołowski <jakub@status.im>

ansible/group_vars/referral.yml

@@ -34,5 +34,9 @@ nginx_sites:
     - ssl_certificate_key /certs/status.im/origin.key
 
     - location / {
+        proxy_set_header Host $host;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Real-IP $remote_addr;
         proxy_pass http://localhost:{{ referral_srv_app_port }}/;
       }