Clean up JedisSentinelTestUtil

* remove all unused methods
* move JedisSentinelPoolTest.waitForJedisSentinelPoolRecognizeNewMaster to JedisSentinelTestUtil
** both JedisSentinelTest and JedisSentinelPoolTest can use this implementation
* introduce FailoverAbortedException
** throws when we subscribe sentinel channels and got message by "-failover-abort-*" channel
* respect Source Format to Java Convention (by Eclipse -> Source -> Format)

src/test/java/redis/clients/jedis/tests/utils/FailoverAbortedException.java

@@ -0,0 +1,17 @@
+package redis.clients.jedis.tests.utils;
+
+public class FailoverAbortedException extends RuntimeException {
+    private static final long serialVersionUID = 1925110762858409954L;
+
+    public FailoverAbortedException(String message) {
+	super(message);
+    }
+
+    public FailoverAbortedException(Throwable cause) {
+	super(cause);
+    }
+
+    public FailoverAbortedException(String message, Throwable cause) {
+	super(message, cause);
+    }
+}