Ping/pong charm

This is the Juju charm layer to build the pingpong charm

Change-Id: I732746a53ce6db0faa3e7e528cb60a60e0296afe
Signed-off-by: Adam Israel <adam.israel@canonical.com>
diff --git a/layers/pingpong/config.yaml b/layers/pingpong/config.yaml
new file mode 100644
index 0000000..437524e
--- /dev/null
+++ b/layers/pingpong/config.yaml
@@ -0,0 +1,5 @@
+options:
+  mode:
+    type: string
+    default:
+    description: "The service type: [ping, pong]"