Speed up Sentinel related tests

* remove FIXME sleep codes for Sentinel related tests
** add functions for Sentinel tests (JedisSentinelTestUtil)
*** waitForSentinelRecognizeRedisReplication
*** waitForNewPromotedMaster
*** waitForSentinelsRecognizeEachOthers
**** TODO: there're no command for sentinel to list recognized sentinel
**** sleep 5.5 sec (sentinel pings to master every 5 sec)

* set HostAndPort class to public(no longer inner) class
** reason: We cannot know pool's current master if HostAndPort class is
private inner class / HostAndPort classes are duplicated (main/test)
** make getter method and parameterized constructor
*** set fields once, get anytime

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

@@ -475,7 +475,7 @@ public class PublishSubscribeCommandsTest extends JedisCommandTestBase {
     @Test @Ignore
     public void subscribeWithoutConnecting() {
         try {
-            Jedis jedis = new Jedis(hnp.host, hnp.port);
+            Jedis jedis = new Jedis(hnp.getHost(), hnp.getPort());
             jedis.subscribe(new JedisPubSub() {
                 public void onMessage(String channel, String message) {
                 }