Switch to use stable data_utils
Tempest provides stable library interfaces under tempest.lib.
This patch switches to use it for data_utils.
Change-Id: I44b2773d92413b8a51d14f8c96042f2cf7db076b
diff --git a/ceilometer/tests/tempest/api/base.py b/ceilometer/tests/tempest/api/base.py
index 5239fb9..05377e7 100644
--- a/ceilometer/tests/tempest/api/base.py
+++ b/ceilometer/tests/tempest/api/base.py
@@ -14,8 +14,8 @@
from oslo_utils import timeutils
from tempest.common import compute
-from tempest.common.utils import data_utils
from tempest import config
+from tempest.lib.common.utils import data_utils
from tempest.lib import exceptions as lib_exc
import tempest.test