Address review comments

command/agent/testdata/plugin.json

@@ -0,0 +1,17 @@
+{
+  "client" : {
+   "memory_total_mb": 5555
+  },
+  "plugin": {
+    "docker": {
+      "config": {
+        "allow_privileged": true
+      }
+    },
+    "raw_exec": {
+      "config": {
+        "enabled": true
+      }
+    }
+  }
+}