Update default worker_connections to 1024, since that plays nice with default OS configs.

defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 nginx_worker_processes: "1"
-nginx_worker_connections: "8192"
+nginx_worker_connections: "1024"
 nginx_client_max_body_size: "64m"
 nginx_keepalive_timeout: "65"
 nginx_remove_default_vhost: false