Updated from global requirements

Change-Id: I2d6aadd0509f5f311d7433ea457ecf5ad6e4e64e

Author: OpenStack Proposal Bot

requirements.txt

@@ -6,7 +6,7 @@ six>=1.9.0 # MIT
 
 Babel>=2.3.4 # BSD
 cliff!=1.16.0,!=1.17.0,>=1.15.0 # Apache-2.0
-keystoneauth1>=2.1.0 # Apache-2.0
+keystoneauth1>=2.7.0 # Apache-2.0
 openstacksdk>=0.8.6 # Apache-2.0
 os-client-config>=1.13.1 # Apache-2.0
 osc-lib>=0.1.0 # Apache-2.0