Update the way the Redis host(s) can be configured for the tests.

There is now a single property : redis-hosts.
This property must contain at least 2 host definitions of the form "host:port" (comma separated).
Sharding tests need 2 hosts ...

If this is not the case, the default value used is "localhost:6379,localhost:6380".
Tests that required one host are using the first definition.

src/test/java/redis/clients/jedis/tests/benchmark/GetSetBenchmark.java

@@ -5,13 +5,16 @@ import java.net.UnknownHostException;
 import java.util.Calendar;
 
 import redis.clients.jedis.Jedis;
+import redis.clients.jedis.tests.HostAndPortUtil;
+import redis.clients.jedis.tests.HostAndPortUtil.HostAndPort;
 
 public class GetSetBenchmark {
+	private static HostAndPort hnp = HostAndPortUtil.getRedisServers().get(0);
     private static final int TOTAL_OPERATIONS = 100000;
 
     public static void main(String[] args) throws UnknownHostException,
 	    IOException {
-	Jedis jedis = new Jedis("localhost");
+	Jedis jedis = new Jedis(hnp.host, hnp.port);
 	jedis.connect();
 	jedis.auth("foobared");
 	jedis.flushAll();