Do not create volume in resource_setup for test_volume_reset_status

In VolumesActionsV2Test, the volume created in resource_setup is
only used in test_volume_reset_status, so the volume can be created
in test_volume_reset_status, thus resource_setup and tearDown can
be removed.

Change-Id: I09fafdfa4d504677dde622a6f474008795e5c8cd
diff --git a/tempest/api/volume/admin/test_volumes_actions.py b/tempest/api/volume/admin/test_volumes_actions.py
index 261e652..4bd7637 100644
--- a/tempest/api/volume/admin/test_volumes_actions.py
+++ b/tempest/api/volume/admin/test_volumes_actions.py
@@ -22,19 +22,6 @@
 
 class VolumesActionsV2Test(base.BaseVolumeAdminTest):
 
-    @classmethod
-    def resource_setup(cls):
-        super(VolumesActionsV2Test, cls).resource_setup()
-
-        # Create a test shared volume for tests
-        cls.volume = cls.create_volume()
-
-    def tearDown(self):
-        # Set volume's status to available after test
-        self.admin_volume_client.reset_volume_status(
-            self.volume['id'], status='available')
-        super(VolumesActionsV2Test, self).tearDown()
-
     def _create_reset_and_force_delete_temp_volume(self, status=None):
         # Create volume, reset volume status, and force delete temp volume
         temp_volume = self.create_volume()
@@ -47,11 +34,13 @@
     @test.idempotent_id('d063f96e-a2e0-4f34-8b8a-395c42de1845')
     def test_volume_reset_status(self):
         # test volume reset status : available->error->available
-        self.admin_volume_client.reset_volume_status(
-            self.volume['id'], status='error')
-        volume_get = self.admin_volume_client.show_volume(
-            self.volume['id'])['volume']
-        self.assertEqual('error', volume_get['status'])
+        volume = self.create_volume()
+        for status in ['error', 'available']:
+            self.admin_volume_client.reset_volume_status(
+                volume['id'], status=status)
+            volume_get = self.admin_volume_client.show_volume(
+                volume['id'])['volume']
+            self.assertEqual(status, volume_get['status'])
 
     @test.idempotent_id('21737d5a-92f2-46d7-b009-a0cc0ee7a570')
     def test_volume_force_delete_when_volume_is_creating(self):