metadata fixes

Change-Id: I1e987be8246fb5f989285bee0b0714a943c9338f
diff --git a/metadata/service/client/single.yml b/metadata/service/client/single.yml
new file mode 100644
index 0000000..d228a76
--- /dev/null
+++ b/metadata/service/client/single.yml
@@ -0,0 +1,14 @@
+classes:
+- service.backupninja.support
+applications:
+- backupninja
+parameters:
+  _param:
+    backupninja_backup_host: backupninja-server-host
+  backupninja:
+    client:
+      enabled: true
+      target:
+        engine: rsync
+        host: ${_param:backupninja_backup_host}
+        user: backupninja