[test][prefix][protocoltemplates] Add one new version of the small protocol template

It will be useful for testing beat/beat.editor> v2

beat/core/test/prefix/protocoltemplates/small/2.json

+{
+    "schema_version": 1,
+    "sets": [
+        {
+            "name": "small_data",
+            "outputs": {
+                "out": "user/single_integer/1"
+            }
+        }
+    ]
+}