Update api tests from tempest

This change is the result of running tools/copy_api_tests_from_tempest.sh

Change-Id: Ibcb6d11b3f7ed8b859c69d4c591bf785b0611416
diff --git a/neutron/tests/tempest/common/isolated_creds.py b/neutron/tests/tempest/common/isolated_creds.py
index e4b0b08..5c94289 100644
--- a/neutron/tests/tempest/common/isolated_creds.py
+++ b/neutron/tests/tempest/common/isolated_creds.py
@@ -14,11 +14,11 @@
 
 import netaddr
 from oslo_log import log as logging
+from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 
 from neutron.tests.api.contrib import clients
 from neutron.tests.tempest.common import cred_provider
-from neutron.tests.tempest.common.utils import data_utils
 from neutron.tests.tempest import config
 from neutron.tests.tempest import exceptions