Disable Notify Delay for app-level-override (#321)

diff --git a/dubbo-samples-governance/dubbo-samples-applevel-override/src/main/resources/spring/dubbo-demo-consumer.xml b/dubbo-samples-governance/dubbo-samples-applevel-override/src/main/resources/spring/dubbo-demo-consumer.xml
index 62c655b..10d99a7 100644
--- a/dubbo-samples-governance/dubbo-samples-applevel-override/src/main/resources/spring/dubbo-demo-consumer.xml
+++ b/dubbo-samples-governance/dubbo-samples-applevel-override/src/main/resources/spring/dubbo-demo-consumer.xml
@@ -27,7 +27,7 @@
 
     <dubbo:application name="governance-appoverride-consumer"/>
 
-    <dubbo:registry address="zookeeper://${zookeeper.address:127.0.0.1}:2181"/>
+    <dubbo:registry address="zookeeper://${zookeeper.address:127.0.0.1}:2181?delay-notification=0"/>
 
     <dubbo:reference id="demoService" check="false" interface="org.apache.dubbo.samples.governance.api.DemoService"/>
 
diff --git a/dubbo-samples-governance/dubbo-samples-applevel-override/src/test/java/org/apache/dubbo/samples/governance/DemoServiceIT.java b/dubbo-samples-governance/dubbo-samples-applevel-override/src/test/java/org/apache/dubbo/samples/governance/DemoServiceIT.java
index e7c0549..2e00cd0 100644
--- a/dubbo-samples-governance/dubbo-samples-applevel-override/src/test/java/org/apache/dubbo/samples/governance/DemoServiceIT.java
+++ b/dubbo-samples-governance/dubbo-samples-applevel-override/src/test/java/org/apache/dubbo/samples/governance/DemoServiceIT.java
@@ -44,7 +44,7 @@
     @Test
     public void test20880() throws Exception {
         ZKTools.generateAppLevelOverride(100, 0);
-        Thread.sleep(10000);
+        Thread.sleep(5000);
         for (int i = 0; i < 10; i++) {
             String result = demoService.sayHello("world");
             System.out.println(result);
@@ -55,7 +55,7 @@
     @Test
     public void test20881() throws Exception {
         ZKTools.generateAppLevelOverride(0, 100);
-        Thread.sleep(10000);
+        Thread.sleep(5000);
         for (int i = 0; i < 10; i++) {
             String result = demoService.sayHello("world");
             System.out.println(result);