Rebase the requirements levels

The global requirements have recently been updated.  This change set
updates the nova-powervm requirements to match the core
global-requirements levels.

Change-Id: I0321a717ab3dad9a82f1089afd274b1aec2d6b0a

requirements.txt

@@ -1,8 +1,8 @@
-pbr>=0.5.21,<1.0
+pbr>=0.11,<2.0
 Babel>=1.3
-six>=1.7.0
-oslo.config>=1.4.0  # Apache-2.0
-oslo.log>=0.1.0  # Apache-2.0
-oslo.serialization>=1.0.0  # Apache-2.0
-oslo.utils>=1.0.0  # Apache-2.0
-taskflow>=0.6
+six>=1.9.0
+oslo.config>=1.11.0  # Apache-2.0
+oslo.log>=1.2.0  # Apache-2.0
+oslo.serialization>=1.4.0               # Apache-2.0
+oslo.utils>=1.6.0                       # Apache-2.0
+taskflow>=0.11.0

test-requirements.txt

@@ -1,14 +1,14 @@
-hacking>=0.9.2,<0.10
+hacking>=0.10.0,<0.11
 
 coverage>=3.6
 discover
-fixtures>=0.3.14
+fixtures>=1.3.1
 python-subunit
-sphinx>=1.1.2
-oslosphinx
-oslotest>=1.2.0
-testrepository>=0.0.17
-testscenarios>=0.4,<0.5
-testtools>=0.9.32
+sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
+oslosphinx>=2.5.0  # Apache-2.0
+oslotest>=1.5.1  # Apache-2.0
+testrepository>=0.0.18
+testscenarios>=0.4
+testtools>=1.4.0
 mock>=1.0
 mox>=0.5.3