Add basic Barbican support

Change-Id: I40b21454ec9e9895c4833e9e3b46e81adbb8be98
diff --git a/barbican/server/single.yml b/barbican/server/single.yml
new file mode 100644
index 0000000..eb2b30b
--- /dev/null
+++ b/barbican/server/single.yml
@@ -0,0 +1,2 @@
+classes:
+- service.barbican.server.single