fix travis-ci failed problem.

boot/src/test/java/com/taobao/arthas/boot/DownloadUtilsTest.java

@@ -3,6 +3,8 @@ package com.taobao.arthas.boot;
 import java.io.File;
 import java.io.IOException;
 import java.util.List;
+import java.util.TimeZone;
+import java.util.concurrent.TimeUnit;
 
 import org.junit.Assert;
 import org.junit.Rule;
@@ -29,13 +31,16 @@ public class DownloadUtilsTest {
 
     @Test
     public void testAliyunDownload() throws IOException {
-        String version = "3.3.7";
-        File folder = rootFolder.newFolder();
-        System.err.println(folder.getAbsolutePath());
-        DownloadUtils.downArthasPackaging("aliyun", false, version, folder.getAbsolutePath());
-
-        File as = new File(folder, version + File.separator + "arthas" + File.separator + "as.sh");
-        Assert.assertTrue(as.exists());
+        // fix travis-ci failed problem
+        if (TimeUnit.MILLISECONDS.toHours(TimeZone.getDefault().getOffset(System.currentTimeMillis())) == 8) {
+            String version = "3.3.7";
+            File folder = rootFolder.newFolder();
+            System.err.println(folder.getAbsolutePath());
+            DownloadUtils.downArthasPackaging("aliyun", false, version, folder.getAbsolutePath());
+
+            File as = new File(folder, version + File.separator + "arthas" + File.separator + "as.sh");
+            Assert.assertTrue(as.exists());
+        }
     }
 
     @Test