Disable body caching for openstack services

This patch disables body caching for openstack services,
as this is useless for REST api.

Change-Id: Id8e9848b8f4696784015d99afe71c1784cded467
Related-Prod: PROD-24702
diff --git a/nginx/server/proxy/ceph_radosgw.yml b/nginx/server/proxy/ceph_radosgw.yml
index 2601849..c69ec3a 100644
--- a/nginx/server/proxy/ceph_radosgw.yml
+++ b/nginx/server/proxy/ceph_radosgw.yml
@@ -16,6 +16,8 @@
             host: ${_param:nginx_proxy_radosgw_service_host}
             port: ${_param:nginx_proxy_radosgw_service_port}
             protocol: http
+            # Prevent nginx from caching request body
+            request_buffer: false
           host:
             name: ${_param:nginx_proxy_radosgw_host}
             port: ${_param:nginx_proxy_radosgw_port}