Update to the latest global requirements versions

Executed the update.py script against Barbican per this repository:
https://github.com/openstack/requirements
The resultant modified files are added per this CR.

Change-Id: I0b151573ca3e345b0e09eed358550fff9571e204

requirements.txt

@@ -1,29 +1,32 @@
-alembic>=0.4.1
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+alembic>=0.6.4
 argparse
 Babel>=1.3
-cryptography>=0.4
-eventlet>=0.13.0
+cryptography>=0.4 # Apache-2.0
+eventlet>=0.15.1
 iso8601>=0.1.9
-jsonschema>=1.3.0,!=1.4.0
-kombu>=2.4.8
-netaddr>=0.7.6
-oslo.config>=1.2.0
-oslo.messaging>=1.3.0a4
+jsonschema>=2.0.0,<3.0.0
+kombu>=2.5.0
+netaddr>=0.7.12
+oslo.config>=1.4.0  # Apache-2.0
+oslo.messaging>=1.4.0
 Paste
 PasteDeploy>=1.5.0
 pbr>=0.6,!=0.7,<1.0
 
-# TODO(john-wood-w) Temporary pin of Pecan, pending bug:
+# TODO(john-wood-w) Temporary pin of Pecan to < 0.7.0, pending bug fix release:
 #   https://bugs.launchpad.net/pecan/+bug/1373003
-pecan==0.6.0
+pecan>=0.5.0,<0.7.0
 
 pycrypto>=2.6
 pysqlite
 keystonemiddleware>=1.0.0
 six>=1.7.0
-SQLAlchemy>=0.7.8,<=0.9.99
-stevedore>=0.12
-WebOb>=1.2.3,<1.3
+SQLAlchemy>=0.8.4,<=0.8.99,>=0.9.7,<=0.9.99
+stevedore>=1.0.0  # Apache-2.0
+WebOb>=1.2.3
 wsgiref>=0.1.2
 
 # TODO: Get this working again...PyKCS11>=1.2.4

setup.py

@@ -17,6 +17,14 @@
 # THIS FILE IS MANAGED BY THE GLOBAL REQUIREMENTS REPO - DO NOT EDIT
 import setuptools
 
+# In python < 2.7.4, a lazy loading of package `pbr` will break
+# setuptools if some other modules registered functions in `atexit`.
+# solution from: http://bugs.python.org/issue15881#msg170215
+try:
+    import multiprocessing  # noqa
+except ImportError:
+    pass
+
 setuptools.setup(
     setup_requires=['pbr'],
     pbr=True)

test-requirements.txt

@@ -1,13 +1,16 @@
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
 coverage>=3.6
 discover
 hacking>=0.8.0,<0.9
 mock>=1.0
-oslotest>=1.1.0.0a1
+oslotest>=1.1.0  # Apache-2.0
 testrepository>=0.0.18
 testtools>=0.9.34
 fixtures>=0.3.14
 requests>=1.2.1,!=2.4.0
 
 # Documentation build requirements
-sphinx>=1.1.2,<1.2
-oslosphinx
+sphinx>=1.1.2,!=1.2.0,<1.3
+oslosphinx>=2.2.0  # Apache-2.0