Updated from global requirements

Change-Id: I00bea6e97e95b8aa7d3881f7c21ac6dcccc78a27

Author: OpenStack Proposal Bot

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
 SQLAlchemy<1.1.0,>=0.9.9
 boto>=2.32.1
 decorator>=3.4.0

setup.py

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