[autotest] Prevent import warning from deployment_test

The repair_test and deployment_test scripts were complaining about
a deprecated import from site_utils.  This converts the offending
import statement to silence the warning.

BUG=chromium:716077
TEST=run `repair_test --help`, see no warnings

Change-Id: Ibfc5b4bd659df86768ebb93ba2c9583a5ed9722b
Reviewed-on: https://chromium-review.googlesource.com/490542
Commit-Ready: Richard Barnette <jrbarnette@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/server/lib/status_history.py b/server/lib/status_history.py
index c534886..80696fd 100755
--- a/server/lib/status_history.py
+++ b/server/lib/status_history.py
@@ -40,7 +40,7 @@
 from django.db import models as django_models
 
 from autotest_lib.client.common_lib import global_config
-from autotest_lib.client.common_lib import site_utils
+from autotest_lib.client.common_lib import utils
 from autotest_lib.client.common_lib import time_utils
 from autotest_lib.frontend.afe import models as afe_models
 from autotest_lib.site_utils.suite_scheduler import constants
@@ -141,7 +141,7 @@
         @return A URL to the requested results log.
 
         """
-        return os.path.join(site_utils.get_offload_gsuri(), logdir)
+        return os.path.join(utils.get_offload_gsuri(), logdir)
 
 
     def __init__(self, start_time, end_time):