@Bean
	public Marker eurekaServerMarkerBean() {
		return new Marker();
	}
Responsible for adding in a marker bean to activate
{@link EurekaServerAutoConfiguration}.

@author Biju Kunjummen
spring-cloud-netflix-eureka-server/src/main/java/org/springframework/cloud/netflix/eureka/server/EurekaServerMarkerConfiguration.java