Update requirements

flame could not install with curent supported version of openstack because the
requirements where conflicting with https://github.com/openstack/requirements

Updated requirements.txt and tes-requirements.txt to match openstack's
global requirements.

Change-Id: I7dd0ba588569922d43d0282183d86c82e5e9b7fc

requirements.txt

@@ -1,7 +1,7 @@
-pbr>=0.6,!=0.7,<1.0
+pbr>=1.6
 Babel>=1.3
 
-netaddr>=0.7.12
+netaddr>=0.7.12,!=0.7.16
 python-keystoneclient
 python-neutronclient
 python-novaclient

test-requirements.txt

@@ -1,12 +1,12 @@
-hacking>=0.9.2,<0.10
+hacking>=0.10.2,<0.11
 
 coverage>=3.6
 discover
-mock>=1.0
-fixtures>=0.3.14
+mock>=1.2
+fixtures>=1.3.1
 python-subunit
-sphinx>=1.1.2
+sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
 oslosphinx
 testrepository>=0.0.18
 testscenarios>=0.4
-testtools>=0.9.34
+testtools>=1.4.0