Sync requiremnts with global requirements

* bump python-keystoneclient to >=0.3.2
* remove upper pin of requests (requests>=1.1)
* remove version pin for six
* bump pyflakes to >=0.7.2,<0.7.4

Change-Id: Id0dfce8d09a184899979b07dd62c7bc80135c774

requirements.txt

@@ -1,9 +1,9 @@
 Babel>=0.9.6
 pbr>=0.5.21,<1.0
 netaddr
-python-keystoneclient>=0.3.0
-requests>=1.1,<1.2.3
-six<1.4.0
+python-keystoneclient>=0.3.2
+requests>=1.1
+six
 
 -f http://tarballs.openstack.org/oslo.config/oslo.config-1.2.0a3.tar.gz#egg=oslo.config-1.2.0a3
 oslo.config>=1.2.0a3

test-requirements.txt

@@ -1,6 +1,6 @@
 # Fix versions for pep8/pyflakes/flake8/hacking
 pep8==1.4.5
-pyflakes==0.7.2
+pyflakes>=0.7.2,<0.7.4
 flake8==2.0
 hacking>=0.5.6,<0.8
 coverage>=3.6