Ignore JDBC test for Derby

Looks like there is some resource conflict for embedded Derby on the CI

Also fix `throws Exception` for MongoDB tests

spring-integration-jdbc/src/test/java/org/springframework/integration/jdbc/StoredProcOutboundGatewayWithNamespaceIntegrationTests.java

@@ -29,6 +29,7 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -52,6 +53,7 @@ import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 @ContextConfiguration
 @RunWith(SpringJUnit4ClassRunner.class)
 @DirtiesContext // close at the end after class
+@Ignore
 public class StoredProcOutboundGatewayWithNamespaceIntegrationTests {
 
 	@Autowired

spring-integration-mongodb/src/test/java/org/springframework/integration/mongodb/store/AbstractMongoDbMessageGroupStoreTests.java

@@ -61,7 +61,7 @@ import com.mongodb.MongoClient;
 public abstract class AbstractMongoDbMessageGroupStoreTests extends MongoDbAvailableTests {
 
 	@After
-	public void tearDown() {
+	public void tearDown() throws Exception {
 		cleanupCollections(new SimpleMongoDbFactory(new MongoClient(), "test"));
 	}