Update ShellCommandExecutorTest.java

dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/worker/shell/ShellCommandExecutorTest.java

@@ -15,7 +15,9 @@
  * limitations under the License.
  */
 package org.apache.dolphinscheduler.server.worker.shell;
+
 import java.lang.reflect.Method;
+
 import com.alibaba.fastjson.JSON;
 import org.apache.dolphinscheduler.common.Constants;
 import org.apache.dolphinscheduler.common.enums.ExecutionStatus;
@@ -38,6 +40,7 @@ import org.powermock.modules.junit4.PowerMockRunner;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.context.ApplicationContext;
+
 import java.util.Date;
 
 /**