cassandra and zookeeper backup added

Change-Id: I77e7d6d8557fd2f7c4c47a4f8e7a3073e43dfd9d
diff --git a/zookeeper/backup/server/single.yml b/zookeeper/backup/server/single.yml
new file mode 100644
index 0000000..aaa877b
--- /dev/null
+++ b/zookeeper/backup/server/single.yml
@@ -0,0 +1,13 @@
+parameters:
+  _param:
+    zookeeper_backup_public_key: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCzLUiHKAjfFXiZ3fsgx35uXF6VivfC5WFafu4QMalxmj6W+s277oCfdWA8Du5f1wtQXM73VQ5nHkXhM2UIfUMarsyhXK+BxKVrcgEBNHdKlDytaecUPyuOxTDdGWhN/DPv5/vL8NYWweEYBbNbLgU0Td7Rvm52TUXKThIDjeF7XDxX4ShXWipBSwU4boOUBtR8KWfga8fsqeBN+eacuAQFR3MrrOfVvAuWW6Bsf047cmd+V6Qv0raoW73Nu4M/ZAdTsaR5k62a0cHsSRoi3hCmNRqw+CZaQi8prQU6t26eWPEtznjp5EkPF+LLh8LxUoCfWqWT+Lxe8QQwT1nx/LCN
+  zookeeper:
+    backup:
+      server:
+        enabled: true
+        hours_before_full: 24
+        full_backups_to_keep: 5
+        key:
+          zookeeper_pub_key:
+            enabled: true
+            key: ${_param:zookeeper_backup_public_key}