adding xtrabackup

Change-Id: I88056e15edd365b904537137bdda172e35461242
diff --git a/xtrabackup/client/single.yml b/xtrabackup/client/single.yml
new file mode 100644
index 0000000..cbe1123
--- /dev/null
+++ b/xtrabackup/client/single.yml
@@ -0,0 +1,3 @@
+classes:
+- service.xtrabackup.client.single
+- system.openssh.client.root
\ No newline at end of file
diff --git a/xtrabackup/server/single.yml b/xtrabackup/server/single.yml
new file mode 100644
index 0000000..d1d54fd
--- /dev/null
+++ b/xtrabackup/server/single.yml
@@ -0,0 +1,2 @@
+classes:
+- service.xtrabackup.server.single