private static Tags tags(InstanceInfo instanceInfo) {
		return Tags.of("port", String.valueOf(instanceInfo.getPort()));
	}
Tests for {@link EurekaInstanceMonitor} with custom tags provider.

@author Wonchul Heo
@author Olga Maciaszek-Sharma
spring-cloud-netflix-eureka-server/src/test/java/org/springframework/cloud/netflix/eureka/server/EurekaInstanceMonitorWithCustomTagsProviderTests.java