Updated from global requirements

Change-Id: I5aa5e608f41e0c2d900ed35ae06db1552a71ea6e

Author: OpenStack Proposal Bot

requirements.txt

@@ -7,7 +7,7 @@ six>=1.9.0 # MIT
 Babel>=2.3.4 # BSD
 cliff!=1.16.0,!=1.17.0,>=1.15.0 # Apache-2.0
 keystoneauth1>=2.7.0 # Apache-2.0
-openstacksdk>=0.8.6 # Apache-2.0
+openstacksdk>=0.9.0 # Apache-2.0
 os-client-config>=1.13.1 # Apache-2.0
 osc-lib>=0.3.0 # Apache-2.0
 oslo.config>=3.12.0 # Apache-2.0