Add --rsync option for backup script

Adjust condition for throttle option

PROD-32205

Change-Id: If59e9db3b7f13f327e21b1eae25e53deddcf5e31
diff --git a/metadata/service/client/single.yml b/metadata/service/client/single.yml
index c6edea0..4406a84 100644
--- a/metadata/service/client/single.yml
+++ b/metadata/service/client/single.yml
@@ -14,6 +14,7 @@
       hours_before_full: 48
       hours_before_incr: 12
       compression: true
+      rsync_tables: true
       compression_threads: 2
       database:
         user: root