Added metadata for producer

Author: zubairov

component.json

@@ -24,7 +24,9 @@
           "note": "This exchange will be created on start if not exists."
         }
       },
-      "metadata": {}
+      "metadata": {
+        "in": "./lib/schemas/publish.in.json"
+      }
     }
   },
   "triggers": {

lib/schemas/publish.in.json

@@ -0,0 +1,15 @@
+{
+  "type": "object",
+  "properties": {
+    "routingKey": {
+      "type": "string",
+      "required": true,
+      "title": "Routing Key"
+    },
+    "payload": {
+      "type": "string",
+      "required": "true",
+      "title": "Payload"
+    }
+  }
+}