Updated from global requirements

Change-Id: I1a164ac0675d4a391b55cd7fbf4a30ec12041db9

requirements.txt

@@ -1,8 +1,8 @@
 anyjson>=0.3.3
 argparse
-httplib2
+httplib2>=0.7.5
 lxml>=2.3
-pbr>=0.5.21,<1.0
+pbr>=0.6,<1.0
 PrettyTable>=0.7,<0.8
-python-keystoneclient>=0.4.2
-six>=1.4.1
+python-keystoneclient>=0.6.0
+six>=1.5.2

test-requirements.txt

@@ -4,7 +4,7 @@ discover
 fixtures>=0.3.14
 hacking>=0.8.0,<0.9
 mock>=1.0
-python-subunit
+python-subunit>=0.0.18
 sphinx>=1.1.2,<1.2
-testrepository>=0.0.17
-testtools>=0.9.32
+testrepository>=0.0.18
+testtools>=0.9.34