Change cached directory for postgresql-embedded

(Workaround for yandex-qatools/postgresql-embedded#110)
See gh-1133

Author: kazuki43zoo

src/test/java/org/apache/ibatis/submitted/usesjava8/keycolumn/InsertTest.java

@@ -57,7 +57,7 @@ public class InsertTest {
   @BeforeClass
   public static void setUp() throws Exception {
     // Launch PostgreSQL server. Download / unarchive if necessary.
-    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get("target/postgres")), "localhost", SocketUtil.findFreePort(), "keycolumn", "postgres", "root", Collections.emptyList());
+    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get(System.getProperty("java.io.tmpdir"), "pgembed")), "localhost", SocketUtil.findFreePort(), "keycolumn", "postgres", "root", Collections.emptyList());
 
     Configuration configuration = new Configuration();
     Environment environment = new Environment("development", new JdbcTransactionFactory(), new UnpooledDataSource(

src/test/java/org/apache/ibatis/submitted/usesjava8/multiple_resultsets/MultipleResultTest.java

@@ -55,7 +55,7 @@ public class MultipleResultTest {
   @BeforeClass
   public static void setUp() throws Exception {
     // Launch PostgreSQL server. Download / unarchive if necessary.
-    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get("target/postgres")), "localhost", SocketUtil.findFreePort(), "multiple_resultsets", "postgres", "root", Collections.emptyList());
+    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get(System.getProperty("java.io.tmpdir"), "pgembed")), "localhost", SocketUtil.findFreePort(), "multiple_resultsets", "postgres", "root", Collections.emptyList());
 
     Configuration configuration = new Configuration();
     Environment environment = new Environment("development", new JdbcTransactionFactory(), new UnpooledDataSource(

src/test/java/org/apache/ibatis/submitted/usesjava8/postgres_genkeys/PostgresGeneratedKeysTest.java

@@ -48,7 +48,7 @@ public class PostgresGeneratedKeysTest {
   @BeforeClass
   public static void setUp() throws Exception {
     //  Launch PostgreSQL server. Download / unarchive if necessary.
-    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get("target/postgres")), "localhost", SocketUtil.findFreePort(), "postgres_genkeys", "postgres", "root", Collections.emptyList());
+    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get(System.getProperty("java.io.tmpdir"), "pgembed")), "localhost", SocketUtil.findFreePort(), "postgres_genkeys", "postgres", "root", Collections.emptyList());
 
     Configuration configuration = new Configuration();
     Environment environment = new Environment("development", new JdbcTransactionFactory(), new UnpooledDataSource(

src/test/java/org/apache/ibatis/submitted/usesjava8/refcursor/RefCursorTest.java

@@ -60,7 +60,7 @@ public class RefCursorTest {
   @BeforeClass
   public static void setUp() throws Exception {
     // Launch PostgreSQL server. Download / unarchive if necessary.
-    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get("target/postgres")), "localhost", SocketUtil.findFreePort(), "refcursor", "postgres", "root", Collections.emptyList());
+    String url = postgres.start(EmbeddedPostgres.cachedRuntimeConfig(Paths.get(System.getProperty("java.io.tmpdir"), "pgembed")), "localhost", SocketUtil.findFreePort(), "refcursor", "postgres", "root", Collections.emptyList());
 
     Configuration configuration = new Configuration();
     Environment environment = new Environment("development", new JdbcTransactionFactory(), new UnpooledDataSource(