feat: add delay test interface in quickstart.

spring-cloud-tencent-examples/quickstart-example/quickstart-callee-service-a/src/main/java/com/tencent/cloud/quickstart/callee/QuickstartCalleeController.java

@@ -159,4 +159,12 @@ public class QuickstartCalleeController {
 	public String faultToleranceForking() {
 		return faultToleranceService.forking();
 	}
+
+	@GetMapping("/delayTest")
+	public String delayTest()  throws InterruptedException {
+		long delay = Long.parseLong(System.getProperty("DELAY_TEST_TIME", "50"));
+		Thread.sleep(delay);
+		LOG.info("Quickstart [{}] Service [{}:{}] is called. datasource = [{}]. Delay Time is {}", appName, ip, port, dataSourceProperties, delay);
+		return String.format("Quickstart [%s] Service [%s:%s] is called. datasource = [%s]. Delay Time is %s", appName, ip, port, dataSourceProperties, delay);
+	}
 }

spring-cloud-tencent-examples/quickstart-example/quickstart-callee-service-b/src/main/java/com/tencent/cloud/quickstart/callee/QuickstartCalleeController.java

@@ -191,4 +191,11 @@ public class QuickstartCalleeController {
 		LOG.info("Quickstart Callee Service [{}:{}] is detected right.", ip, port);
 		return new ResponseEntity<>(String.format("Quickstart Callee Service [%s:%s] is detected right.", ip, port), HttpStatus.OK);
 	}
+	@GetMapping("/delayTest")
+	public String delayTest()  throws InterruptedException {
+		long delay = Long.parseLong(System.getProperty("DELAY_TEST_TIME", "50"));
+		Thread.sleep(delay);
+		LOG.info("Quickstart [{}] Service [{}:{}] is called. datasource = [{}]. Delay Time is {}", appName, ip, port, dataSourceProperties, delay);
+		return String.format("Quickstart [%s] Service [%s:%s] is called. datasource = [%s]. Delay Time is %s", appName, ip, port, dataSourceProperties, delay);
+	}
 }

spring-cloud-tencent-examples/quickstart-example/quickstart-caller-service/src/main/java/com/tencent/cloud/quickstart/caller/QuickstartCallerController.java

@@ -264,4 +264,10 @@ public class QuickstartCallerController {
 	public String user(@RequestBody User user) {
 		return restTemplate.postForObject("http://QuickstartCalleeService/quickstart/callee/user", user, String.class);
 	}
+
+	@GetMapping("/delayTest")
+	public String delayTest() {
+		String path = "http://QuickstartCalleeService/quickstart/callee/delayTest";
+		return restTemplate.getForObject(path, String.class);
+	}
 }