Updated from global requirements

Change-Id: I836a4e3d17aa9cd3a4231c0aa19f8a06b1398f12

requirements.txt

@@ -7,7 +7,7 @@ Flask<1.0,>=0.10
 jsonpath-rw<2.0,>=1.2.0
 jsonschema!=2.5.0,<3.0.0,>=2.0.0
 keystonemiddleware>=2.0.0
-pbr<2.0,>=1.6
+pbr>=1.6
 python-ironicclient>=0.8.0
 python-keystoneclient>=1.6.0
 python-swiftclient>=2.2.0

setup.py

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