Add spn testing setup

spn/testing/simple/config-template.json

@@ -0,0 +1,19 @@
+{
+  "core": {
+    "log": {
+      "level": "trace"
+    },
+    "metrics": {
+      "instance": "test_$HUBNAME",
+      "push": ""
+    }
+  },
+  "spn": {
+    "publicHub": {
+      "name": "test-$HUBNAME",
+      "transports": ["http:80", "http:8080", "tcp:17"],
+      "allowUnencrypted": true,
+      "bindToAdvertised": true
+    }
+  }
+}