chore: align import order in QuorumPeerTestBaseTest

Author: seekskyworld

zookeeper-server/src/test/java/org/apache/zookeeper/server/quorum/QuorumPeerTestBaseTest.java

@@ -20,7 +20,6 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
-
 import java.io.File;
 import org.apache.zookeeper.PortAssignment;
 import org.apache.zookeeper.test.ClientBase;