Fix requirements

The requirements that were pushed for the project were not matching
OpenStack's global requirements. I used the official update.py tool
to fix it.

Change-Id: I01b4b3747e511454dbcbca2296a06c8327c5d1fa

requirements.txt

@@ -2,4 +2,4 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-pbr>=1.6  # Apache-2.0
+pbr>=1.6 # Apache-2.0

setup.py

@@ -25,5 +25,5 @@ except ImportError:
     pass
 
 setuptools.setup(
-    setup_requires=['pbr'],
+    setup_requires=['pbr>=1.8'],
     pbr=True)

test-requirements.txt

@@ -2,13 +2,13 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=0.11.0,<0.12  # Apache-2.0
+hacking<0.12,>=0.11.0 # Apache-2.0
 
-coverage>=3.6  # Apache-2.0
-python-subunit>=0.0.18  # Apache-2.0/BSD
-sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3  # BSD
-oslosphinx>=2.5.0,!=3.4.0  # Apache-2.0
-oslotest>=1.10.0  # Apache-2.0
-testrepository>=0.0.18  # Apache-2.0/BSD
-testscenarios>=0.4  # Apache-2.0/BSD
-testtools>=1.4.0  # MIT
+coverage>=3.6 # Apache-2.0
+python-subunit>=0.0.18 # Apache-2.0/BSD
+sphinx!=1.2.0,!=1.3b1,<1.3,>=1.1.2 # BSD
+oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
+oslotest>=1.10.0 # Apache-2.0
+testrepository>=0.0.18 # Apache-2.0/BSD
+testscenarios>=0.4 # Apache-2.0/BSD
+testtools>=1.4.0 # MIT