Added test for volume type show

Change-Id: I05bbbdd8389f57d567b02391cbbc52448a9a2e7a

Author: k-chu

functional/tests/volume/v1/test_volume_type.py

@@ -38,3 +38,8 @@ def test_volume_type_list(self):
         opts = self.get_list_opts(self.HEADERS)
         raw_output = self.openstack('volume type list' + opts)
         self.assertIn(self.NAME, raw_output)
+
+    def test_volume_type_show(self):
+        opts = self.get_show_opts(self.FIELDS)
+        raw_output = self.openstack('volume type show ' + self.NAME + opts)
+        self.assertEqual(self.NAME + "\n", raw_output)