gs_offloader: Reorder imports, remove relative import.

BUG=chromium:686904
TEST=None

Change-Id: Ib88f08f3bcd88cd81de659d9a83be9ab34c3de92
Reviewed-on: https://chromium-review.googlesource.com/434970
Commit-Ready: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/site_utils/gs_offloader_unittest.py b/site_utils/gs_offloader_unittest.py
index 138837a..7aa65fc 100644
--- a/site_utils/gs_offloader_unittest.py
+++ b/site_utils/gs_offloader_unittest.py
@@ -18,13 +18,12 @@
 import mox
 
 import common
-import gs_offloader
-import job_directories
-
 from autotest_lib.client.common_lib import global_config, site_utils
 from autotest_lib.client.common_lib import time_utils
 from autotest_lib.client.common_lib import utils
 from autotest_lib.scheduler import email_manager
+from autotest_lib.site_utils import gs_offloader
+from autotest_lib.site_utils import job_directories
 from autotest_lib.tko import models
 
 # Test value to use for `days_old`, if nothing else is required.