Updated from global requirements

Change-Id: I667e40446868d3f56e15e229492efb89fda53667

requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-pbr<2.0,>=1.6
+pbr>=1.6
 alembic>=0.8.0
 Babel>=1.3
 iso8601>=0.1.9

setup.py

@@ -25,5 +25,5 @@ except ImportError:
     pass
 
 setuptools.setup(
-    setup_requires=['pbr>=1.3'],
+    setup_requires=['pbr>=1.8'],
     pbr=True)

test-requirements.txt

@@ -18,4 +18,4 @@ oslosphinx>=2.5.0 # Apache-2.0
 oslotest>=1.10.0 # Apache-2.0
 testrepository>=0.0.18
 testtools>=1.4.0
-tempest-lib>=0.6.1
+tempest-lib>=0.8.0