Sync requirements with global-requirements

Change-Id: I5904a6b2934cead20bcc336d1286fa8e35f1d7bd

requirements.txt

@@ -7,4 +7,4 @@
 # be installed in a specific order.
 #
 # PBR should always appear first
-pbr<2.0,>=1.3
+pbr>=1.6

setup.py

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

test-requirements.txt

@@ -12,7 +12,7 @@ hacking<0.11,>=0.10.0
 #
 coverage>=3.6
 django-nose>=1.2
-mock>=1.1
+mock>=1.2
 mox3>=0.7.0
 nodeenv>=0.9.4 # BSD License
 nose