Use the prefix-embedded rand_name method

A version of data_utils.rand_name in tempest_lib was created in tempest to
include a prefix specified in the conf file. This commit changes the
data_utils imports to use the new one in tempest.

Change-Id: Ie3fb5c3ac9afe365bf24e40b00be88d66da7c507
diff --git a/tempest/api/compute/servers/test_create_server.py b/tempest/api/compute/servers/test_create_server.py
index 408d4ee..b18275c 100644
--- a/tempest/api/compute/servers/test_create_server.py
+++ b/tempest/api/compute/servers/test_create_server.py
@@ -16,10 +16,10 @@
 import base64
 
 import netaddr
-from tempest_lib.common.utils import data_utils
 import testtools
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
 from tempest import test
diff --git a/tempest/api/compute/servers/test_instance_actions_negative.py b/tempest/api/compute/servers/test_instance_actions_negative.py
index afd3b7a..6567da1 100644
--- a/tempest/api/compute/servers/test_instance_actions_negative.py
+++ b/tempest/api/compute/servers/test_instance_actions_negative.py
@@ -13,10 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import test
 
 
diff --git a/tempest/api/compute/servers/test_list_server_filters.py b/tempest/api/compute/servers/test_list_server_filters.py
index 7a91cab..0fda155 100644
--- a/tempest/api/compute/servers/test_list_server_filters.py
+++ b/tempest/api/compute/servers/test_list_server_filters.py
@@ -13,12 +13,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
 from tempest.api import utils
 from tempest.common import fixed_network
+from tempest.common.utils import data_utils
 from tempest import config
 from tempest import test
 
diff --git a/tempest/api/compute/servers/test_multiple_create.py b/tempest/api/compute/servers/test_multiple_create.py
index 11b457b..a945411 100644
--- a/tempest/api/compute/servers/test_multiple_create.py
+++ b/tempest/api/compute/servers/test_multiple_create.py
@@ -13,9 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
-
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import test
 
 
diff --git a/tempest/api/compute/servers/test_multiple_create_negative.py b/tempest/api/compute/servers/test_multiple_create_negative.py
index bfc98ff..8135768 100644
--- a/tempest/api/compute/servers/test_multiple_create_negative.py
+++ b/tempest/api/compute/servers/test_multiple_create_negative.py
@@ -13,10 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import test
 
 
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 6fcd38a..814f86d 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -17,12 +17,12 @@
 import logging
 
 from six.moves.urllib import parse as urlparse
-from tempest_lib.common.utils import data_utils
 from tempest_lib import decorators
 from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest.common.utils.linux import remote_client
 from tempest import config
 from tempest import test
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index ca808dd..f6dd5e3 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -13,10 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import decorators
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import test
 
 
diff --git a/tempest/api/compute/servers/test_server_metadata_negative.py b/tempest/api/compute/servers/test_server_metadata_negative.py
index a8f7597..c42ec3d 100644
--- a/tempest/api/compute/servers/test_server_metadata_negative.py
+++ b/tempest/api/compute/servers/test_server_metadata_negative.py
@@ -13,10 +13,10 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import test
 
 
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index 4e3ce47..20bc77f 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -13,9 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
-
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import config
 from tempest import test
 
diff --git a/tempest/api/compute/servers/test_server_rescue_negative.py b/tempest/api/compute/servers/test_server_rescue_negative.py
index 7798005..9cc9e9b 100644
--- a/tempest/api/compute/servers/test_server_rescue_negative.py
+++ b/tempest/api/compute/servers/test_server_rescue_negative.py
@@ -13,11 +13,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import config
 from tempest import test
 
diff --git a/tempest/api/compute/servers/test_servers.py b/tempest/api/compute/servers/test_servers.py
index 31078e3..8f5da20 100644
--- a/tempest/api/compute/servers/test_servers.py
+++ b/tempest/api/compute/servers/test_servers.py
@@ -13,9 +13,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest_lib.common.utils import data_utils
-
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import test
 
 
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 08bebc0..e13c5ae 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -15,11 +15,11 @@
 
 import sys
 
-from tempest_lib.common.utils import data_utils
 from tempest_lib import exceptions as lib_exc
 import testtools
 
 from tempest.api.compute import base
+from tempest.common.utils import data_utils
 from tempest import config
 from tempest import test