Ignore test until couchbase support is restored

The changes required to restore our Couchbase support are too involved
and we should hear from the data couchbase team first.

See gh-8200

spring-boot-samples/spring-boot-sample-data-couchbase/src/test/java/sample/data/couchbase/SampleCouchbaseApplicationTests.java

@@ -17,6 +17,7 @@ package sample.data.couchbase;
 
 import java.net.ConnectException;
 
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 
@@ -32,6 +33,7 @@ public class SampleCouchbaseApplicationTests {
 	public OutputCapture outputCapture = new OutputCapture();
 
 	@Test
+	@Ignore("See #8200")
 	public void testDefaultSettings() throws Exception {
 		try {
 			new SpringApplicationBuilder(SampleCouchbaseApplication.class)