Fixed skip messages to match pillars

Change-Id: I5bdbaf7a2c6d59f68a37cb2213b8c31f64e742d3
diff --git a/cvp_checks/tests/test_cinder_services.py b/cvp_checks/tests/test_cinder_services.py
index 20bd17d..f6aaf4a 100644
--- a/cvp_checks/tests/test_cinder_services.py
+++ b/cvp_checks/tests/test_cinder_services.py
@@ -8,7 +8,8 @@
         ['cinder:controller:backend'],
         expr_form='pillar')
     if not cinder_backends_info:
-        pytest.skip("Cinder is not found on this environment")
+        pytest.skip("Cinder service or cinder:controller pillar \
+        are not found on this environment.")
     service_down = local_salt_client.cmd(
         'keystone:server',
         'cmd.run',