Revert "Update tests to shut down in-memory databases proactively"

For reasons I don't (yet?) understand, shutting down the databases
proactively triggers a StackOverflowError in Jersey. Reverting the
change while I try to figure out what's going in.

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/jdbc/DataSourceInitializerTests.java

@@ -56,8 +56,7 @@ public class DataSourceInitializerTests {
 		EmbeddedDatabaseConnection.override = null;
 		EnvironmentTestUtils.addEnvironment(this.context,
 				"spring.datasource.initialize:false",
-				"spring.datasource.url:jdbc:hsqldb:mem:testdb-" + new Random().nextInt()
-						+ ";shutdown=true");
+				"spring.datasource.url:jdbc:hsqldb:mem:testdb-" + new Random().nextInt());
 	}
 
 	@After

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/orm/jpa/AbstractJpaAutoConfigurationTests.java

@@ -19,14 +19,12 @@ package org.springframework.boot.autoconfigure.orm.jpa;
 import java.lang.reflect.Field;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.Random;
 
 import javax.persistence.EntityManagerFactory;
 import javax.sql.DataSource;
 
 import org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform;
 import org.junit.After;
-import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
@@ -73,13 +71,6 @@ public abstract class AbstractJpaAutoConfigurationTests {
 
 	protected AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 
-	@Before
-	public void setup() {
-		EnvironmentTestUtils.addEnvironment(this.context,
-				"spring.datasource.url:jdbc:hsqldb:mem:testdb-" + new Random().nextInt()
-						+ ";shutdown=true");
-	}
-
 	@After
 	public void close() {
 		this.context.close();

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/SecurityAutoConfigurationTests.java

@@ -297,7 +297,7 @@ public class SecurityAutoConfigurationTests {
 		this.context = new AnnotationConfigWebApplicationContext();
 		this.context.setServletContext(new MockServletContext());
 		EnvironmentTestUtils.addEnvironment(this.context,
-				"spring.datasource.url:jdbc:hsqldb:mem:testsecdb;shutdown=true");
+				"spring.datasource.url:jdbc:hsqldb:mem:testsecdb");
 		this.context.register(EntityConfiguration.class,
 				PropertyPlaceholderAutoConfiguration.class,
 				DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class,

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/jpa/JpaUserDetailsTests.java

@@ -29,7 +29,6 @@ import org.springframework.boot.test.SpringApplicationConfiguration;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Import;
 import org.springframework.test.annotation.DirtiesContext;
-import org.springframework.test.context.TestPropertySource;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
 /**
@@ -43,7 +42,6 @@ import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 @RunWith(SpringJUnit4ClassRunner.class)
 @SpringApplicationConfiguration(JpaUserDetailsTests.Main.class)
 @DirtiesContext
-@TestPropertySource(properties = "spring.datasource.url:jdbc:hsqldb:mem:testdb;shutdown=true")
 public class JpaUserDetailsTests {
 
 	@Test