Add rgw_swift_enforce_content_length parameter

* Some tempest tests use accept-ranges header
  which is added by this param

Change-Id: Ideb3883ab89a0c3d3defbb93b3bcc1208f377fc3
Closes-Bug: #PROD-24333 (PROD:24333)
diff --git a/metadata/service/radosgw/single.yml b/metadata/service/radosgw/single.yml
index cfc968b..85430d8 100644
--- a/metadata/service/radosgw/single.yml
+++ b/metadata/service/radosgw/single.yml
@@ -14,7 +14,5 @@
       bind:
         address: ${_param:single_address}
         port: ${_param:ceph_radosgw_bind_port}
-    client:
-      config:
-        client.radosgw.gateway:
-          rgw_swift_enforce_content_length: true
+      swift:
+        enforce_content_length: true
\ No newline at end of file