Updated from global requirements

Change-Id: Ie6b85f717a7fe5bce2f6a711168dba894940cde9

Author: OpenStack Proposal Bot

requirements.txt

@@ -5,7 +5,7 @@ pbr>=1.8 # Apache-2.0
 six>=1.9.0 # MIT
 
 Babel>=2.3.4 # BSD
-cliff>=2.2.0 # Apache-2.0
+cliff>=2.3.0 # Apache-2.0
 keystoneauth1>=2.14.0 # Apache-2.0
 openstacksdk>=0.9.10 # Apache-2.0
 osc-lib>=1.2.0 # Apache-2.0