Fix Drive mtime and btime (#299)

* Update drive.py

fix timestamp about api.drive.upload()

* Update pyicloud/services/drive.py

Co-authored-by: Quentame <polletquentin74@me.com>

pyicloud/services/drive.py

@@ -113,8 +113,8 @@ class DriveService(object):
                 "is_executable": False,
                 "is_hidden": False,
             },
-            "mtime": int(time.time()),
-            "btime": int(time.time()),
+            "mtime": int(time.time() * 1000),
+            "btime": int(time.time() * 1000),
         }
 
         # Add the receipt if we have one. Will be absent for 0-sized files