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/main/java/redis/clients/jedis/HostAndPort.java

@@ -0,0 +1,39 @@
+package redis.clients.jedis;
+
+public class HostAndPort {
+	private String host;
+	private int port;
+	
+	public HostAndPort(String host, int port) {
+		this.host = host;
+		this.port = port;
+	}
+
+	public String getHost() {
+		return host;
+	}
+
+	public int getPort() {
+		return port;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+	    if (obj instanceof HostAndPort) {
+			HostAndPort hp = (HostAndPort) obj;
+			
+			// localhost and 127.0.0.1 is same
+			return port == hp.port && 
+				(host.equals(hp.host) || 
+						(host.equals("localhost") && hp.host.equals("127.0.0.1")) || 
+						(host.equals("127.0.0.1") && hp.host.equals("localhost")) );
+	    }
+	    
+	    return false;
+	}
+
+	@Override
+	public String toString() {
+	    return host + ":" + port;
+	}
+}