HADOOP-14486 TestSFTPFileSystem#testGetAccessTime test failure using openJDK 1.8.0.

Contributed by Hongyuan Li.

(cherry picked from commit 942ecbbc98)

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/sftp/TestSFTPFileSystem.java

@@ -316,6 +316,7 @@ public class TestSFTPFileSystem {
     java.nio.file.Path path = (local).pathToFile(file).toPath();
     long accessTime1 = Files.readAttributes(path, BasicFileAttributes.class)
         .lastAccessTime().toMillis();
+    accessTime1 = (accessTime1 / 1000) * 1000;
     long accessTime2 = sftpFs.getFileStatus(file).getAccessTime();
     assertEquals(accessTime1, accessTime2);
   }