Updated from global requirements

Change-Id: If087141fbbef3339f49193cd1558e0d9a246b99d

test-requirements.txt

@@ -23,7 +23,7 @@ python-neutronclient>=5.1.0 # Apache-2.0
 python-openstackclient>=3.3.0 # Apache-2.0
 python-swiftclient>=3.2.0 # Apache-2.0
 pytz>=2013.6 # MIT
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx>=1.5.1 # BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT