Polish "Update smoke tests to avoid conflicts with NAME environment variable"

See gh-31267

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jetty10/src/main/java/smoketest/jetty10/service/HelloWorldService.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,7 +22,7 @@ import org.springframework.stereotype.Component;
 @Component
 public class HelloWorldService {
 
-	@Value("${name:World}")
+	@Value("${test.name:World}")
 	private String name;
 
 	public String getHelloMessage() {