Updated from global requirements

Change-Id: I071601a07d74711828dc961b646dc066262698da

requirements.txt

@@ -1,7 +1,7 @@
 pbr>=0.5.21,<1.0
 argparse
 iso8601>=0.1.8
-PrettyTable>=0.6,<0.8
+PrettyTable>=0.7,<0.8
 requests>=1.1
 simplejson>=2.0.9
 six>=1.4.1

test-requirements.txt

@@ -5,6 +5,6 @@ discover
 fixtures>=0.3.14
 keyring>=1.6.1,<2.0
 mock>=1.0
-sphinx>=1.1.2
+sphinx>=1.1.2,<1.2
 testrepository>=0.0.17
 testtools>=0.9.32