Revert "Remove tempest.common data_utils"

This reverts commit bd65bbb78b.

Change-Id: I901d7e78f97ad6eed0f0aec254a36c287b66d9b1

tempest/api/identity/admin/v3/test_oauth_consumers.py

@@ -14,7 +14,7 @@
 #    under the License.
 
 from tempest.api.identity import base
-from tempest.lib.common.utils import data_utils
+from tempest.common.utils import data_utils
 from tempest.lib.common.utils import test_utils
 from tempest.lib import decorators
 from tempest.lib import exceptions as exceptions

tempest/common/utils/__init__.py

@@ -0,0 +1,38 @@
+# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from functools import partial
+
+from tempest import config
+from tempest.lib.common.utils import data_utils as lib_data_utils
+
+CONF = config.CONF
+
+
+class DataUtils(object):
+    def __getattr__(self, attr):
+
+        if attr == 'rand_name':
+            # NOTE(flwang): This is a proxy to generate a random name that
+            # includes a random number and a prefix if one is configured in
+            # CONF.resources_prefix
+            attr_obj = partial(lib_data_utils.rand_name,
+                               prefix=CONF.resources_prefix)
+        else:
+            attr_obj = getattr(lib_data_utils, attr)
+
+        self.__dict__[attr] = attr_obj
+        return attr_obj
+
+data_utils = DataUtils()