Updated from global requirements

Change-Id: I56cc8868dfddffd27e2212c9465bdbfb58e838f7
diff --git a/requirements.txt b/requirements.txt
index 811580a..ddd2a6b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,6 +22,6 @@
 iso8601>=0.1.9
 fixtures>=1.3.1
 testscenarios>=0.4
-tempest-lib>=0.8.0
+tempest-lib>=0.9.0
 PyYAML>=3.1.0
 stevedore>=1.5.0 # Apache-2.0