Updated from global requirements

Change-Id: I3673966dd6dc2b65c3031acd58abca3f9f58c75b

requirements.txt

@@ -9,12 +9,12 @@ lxml>=2.3
 WebOb>=1.2.3,<1.3
 greenlet>=0.3.2
 sqlalchemy-migrate>=0.7.2
-netaddr
+netaddr>=0.7.6
 paramiko>=1.8.0
-iso8601>=0.1.4
+iso8601>=0.1.4,!=0.1.5,!=0.1.6
 python-neutronclient>=2.3.0,<3
 python-glanceclient>=0.9.0
-python-keystoneclient>=0.3.2
+python-keystoneclient>=0.4.1
 stevedore>=0.10
 websockify>=0.5.1,<0.6
 oslo.config>=1.2.0