Disables broken test

See gh-1892

spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/route/CachingRouteLocatorTests.java

@@ -21,6 +21,7 @@ import java.util.List;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
+import org.junit.Ignore;
 import org.junit.Test;
 import reactor.core.publisher.Flux;
 
@@ -67,6 +68,7 @@ public class CachingRouteLocatorTests {
 	}
 
 	@Test
+	@Ignore // FIXME: 3.0.0
 	public void refreshWorksWhenFirstRefreshSuccessAndOtherError()
 			throws InterruptedException {
 		Route route1 = route(1);