Fix max body size limit (#365)

* Fix file upload size limit

* Remove trailing whitespace
diff --git a/conf.d/managed_endpoints.conf b/conf.d/managed_endpoints.conf
index 7df79a4..71336f0 100644
--- a/conf.d/managed_endpoints.conf
+++ b/conf.d/managed_endpoints.conf
@@ -37,6 +37,9 @@
     access_log /var/log/api-gateway/access.log platform;
     error_log /var/log/api-gateway/gateway_error.log debug;
 
+    # Allow payloads of up to 5MB
+    client_max_body_size 5m;
+
     # include environment variable
 
     error_page 500 501 502 503 504 /50x.html;
@@ -72,7 +75,6 @@
         set $responseBody '';
 
         proxy_read_timeout 70s;
-        client_max_body_size 5m;
 
         access_by_lua_block {
             local routing = require "routing"