Drop odd keys from structure

 * Disable root login by default
 * Drop odd lab users|key

Depends-on: https://gerrit.mcp.mirantis.com/#/c/37641/

Change-Id: I052696aa4662251dfe9db76759fbca18985b8e79
Related-Prod: PROD-27456 (PROD:27456)
diff --git a/defaults/backup.yml b/defaults/backup.yml
index 66e5173..1cff51b 100644
--- a/defaults/backup.yml
+++ b/defaults/backup.yml
@@ -5,3 +5,6 @@
     backup_day_of_month: "*"
     backup_month: "*"
     backup_day_of_week: "*"
+    zookeeper_remote_backup_server: cfg01
+    cassandra_remote_backup_server: cfg01
+    xtrabackup_client_throttle: 0 # disabled