Updated from global requirements

Change-Id: I1b392af641be03091b4ac1298b5c85f34998e047
diff --git a/test-requirements.txt b/test-requirements.txt
index 65e3531..2ea30ec 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,4 +9,4 @@
 mox>=0.5.3
 mock>=1.2
 coverage>=3.6
-oslotest>=1.7.0 # Apache-2.0
+oslotest>=1.9.0 # Apache-2.0