@LoadBalanced
	@Bean
	@SentinelRestTemplate
	public RestTemplate restTemplate() {
		return new RestTemplate();
	}
@author raozihao
@author <a href="mailto:zihaorao@gmail.com">Steve</a>
spring-cloud-alibaba-examples/sentinel-example/sentinel-resttemplate-example/src/main/java/com/alibaba/cloud/examples/configuration/RestTemplateConfiguration.java