fix: label -> cluster

apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/registry/configuration/support/ApolloServiceRegistryDeregisterApplicationListener.java

@@ -49,14 +49,14 @@ private void deregister() {
     try {
       this.serviceRegistry.deregister(this.registration);
       log.info(
-          "deregister success, '{}' uri '{}', label '{}'",
+          "deregister success, '{}' uri '{}', cluster '{}'",
           this.registration.getServiceName(),
           this.registration.getUri(),
           this.registration.getCluster()
       );
     } catch (Throwable t) {
       log.error(
-          "deregister fail, '{}' uri '{}',  label '{}'",
+          "deregister fail, '{}' uri '{}',  cluster '{}'",
           this.registration.getServiceName(),
           this.registration.getUri(),
           this.registration.getCluster(),

apollo-biz/src/main/java/com/ctrip/framework/apollo/biz/registry/configuration/support/ApolloServiceRegistryHeartbeatApplicationRunner.java

@@ -59,7 +59,7 @@ public ApolloServiceRegistryHeartbeatApplicationRunner(
   public void run(ApplicationArguments args) throws Exception {
     // register
     log.info(
-        "register to database. '{}': uri '{}', label '{}' ",
+        "register to database. '{}': uri '{}', cluster '{}' ",
         this.registration.getServiceName(),
         this.registration.getUri(),
         this.registration.getCluster()