SEC-2447: JdbcMutableAclServiceTests should invoke aclCache.clearCache()

acl/src/test/java/org/springframework/security/acls/jdbc/JdbcMutableAclServiceTests.java

@@ -105,6 +105,7 @@ public class JdbcMutableAclServiceTests extends AbstractTransactionalJUnit4Sprin
         jdbcTemplate.execute("drop table acl_object_identity");
         jdbcTemplate.execute("drop table acl_class");
         jdbcTemplate.execute("drop table acl_sid");
+        aclCache.clearCache();
     }
 
     @Test