cinder v2 api tests - part1

Change volume base class name:
BaseVolumeTest -> BaseVolumeV1Test
BaseVolumeAdminTest -> BaseVolumeV1AdminTest
for the support of cinder V2 test class

Implements: blueprint cinder-v2-api-tests

Change-Id: I712a90d39981564af09393ed1b7f4be12897c808
diff --git a/tempest/api/volume/test_volumes_actions.py b/tempest/api/volume/test_volumes_actions.py
index 8581d16..61f1bda 100644
--- a/tempest/api/volume/test_volumes_actions.py
+++ b/tempest/api/volume/test_volumes_actions.py
@@ -15,14 +15,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from tempest.api.volume.base import BaseVolumeTest
+from tempest.api.volume import base
 from tempest.common.utils import data_utils
 from tempest.test import attr
 from tempest.test import services
 from tempest.test import stresstest
 
 
-class VolumesActionsTest(BaseVolumeTest):
+class VolumesActionsTest(base.BaseVolumeV1Test):
     _interface = "json"
 
     @classmethod