Updated from global requirements

Change-Id: Idb02aa4735d48985c24eb3f8839ce9e1f9685c2d

Author: OpenStack Proposal Bot

requirements.txt

@@ -8,7 +8,7 @@ oslo.i18n>=1.5.0  # Apache-2.0
 oslo.serialization>=1.4.0               # Apache-2.0
 oslo.utils>=1.4.0                       # Apache-2.0
 PrettyTable>=0.7,<0.8
-python-keystoneclient>=1.3.0
+python-keystoneclient>=1.6.0
 requests>=2.5.2
 six>=1.9.0
 stevedore>=1.3.0  # Apache-2.0