Implemented BGREWRITEAOF

src/test/java/redis/clients/jedis/tests/commands/PersistenceControlCommandsTest.java

@@ -15,4 +15,10 @@ public class PersistenceControlCommandsTest extends JedisCommandTestBase {
 	assertEquals("Background saving started", status);
     }
 
+    @Test
+    public void bgrewriteaof() {
+	String status = jedis.bgrewriteaof();
+	assertEquals("Background append only file rewriting started", status);
+    }
+
 }