Revise pubsub samples (#98)

Signed-off-by: Benjamin Huo <benjamin@kubesphere.io>

Signed-off-by: Benjamin Huo <benjamin@kubesphere.io>

Author: benjaminhuo

functions/async/pubsub/producer/deploy.yaml

@@ -29,12 +29,12 @@ spec:
               value: "autoscaling-producer"
             - name: TOPIC_NAME
               value: "sample-topic"
-#            - name: NUMBER_OF_PUBLISHERS
-#              value: "10"
-#            - name: PUBLISHERS_DELAY
-#              value: "1s"
-#            - name: PUBLISHERS_FREQ
-#              value: "1s"
+            - name: NUMBER_OF_PUBLISHERS
+              value: "5"
+            - name: PUBLISHERS_DELAY
+              value: "1s"
+            - name: PUBLISHERS_FREQ
+              value: "1s"
           ports:
             - containerPort: 60034
               name: function-port