DATAREDIS-552 - Support client name configuration for JedisConnectionFactory.

Motivation:
JedisConnectionFactory should support setting clientName for Jedis connections
so to improve troubleshooting.

Result:
Easier to troubleshooting with connection name.

Original pull request: #219.

src/test/java/org/springframework/data/redis/connection/jedis/JedisConnectionFactoryTests.java

@@ -39,6 +39,7 @@ public class JedisConnectionFactoryTests {
 	@Before
 	public void setUp() {
 		factory = new JedisConnectionFactory(SENTINEL_CONFIG);
+		factory.setClientName("clientName");
 		factory.afterPropertiesSet();
 	}
 
@@ -54,4 +55,9 @@ public class JedisConnectionFactoryTests {
 	public void shouldSendCommandCorrectlyViaConnectionFactoryUsingSentinel() {
 		assertThat(factory.getConnection().ping(), equalTo("PONG"));
 	}
+	
+	@Test
+	public void getClientNameShouldEqualWithFactorySetting() {
+		assertThat(factory.getConnection().getClientName(), equalTo("clientName"));
+	}
 }