Add decorator to the global requirements

This module is usefull for declaring decorators. It is important in some
cases where method signature has to be preserved between the
original method and the decorated method ; when inspect is used.

We have a feature in rally requiring to preserve signature of the
original method. Here is a link which explains why we need this
dependency: http://fperez.org/py4science/decorators.html

Change-Id: Icef9a043fbf892bb401139902dc38cb6b4bf8030
Start renaming oslo.sphinx to oslosphinx

Add oslosphinx in addition to oslo.sphinx so we can update
consuming projects before removing oslo.sphinx from the
dependency list.

Partial-bug: #1277168

Change-id: I7788a9d6b5984fdfcc4678f2182104d2eb8a2be0
Add a new dependency: trollius

Trollius is a port of the new asyncio module on Python 2.6 and 2.7. I would
like to replace eventlet with asyncio (Trollius). See my blueprint for Oslo
Messaging for more information:
https://wiki.openstack.org/wiki/Oslo/blueprints/asyncio

Limit the version to < 0.2 because the API *might* be broken in version 0.2.

Change-Id: Ic5d1df60eb3b86696f4c61d609e617c2ed05518c
WSME: update to 0.6

0.6 version adds some API parameter type classes for API validation.
We can replace each project's own classes with these WSME's classes.
By sharing the same classes between projects, it conduces to good
quality.

Change-Id: I2e93f73c7caf2b176290c62562a109ded4b0e077
Add oslo.version to the list of projects

Enables oslo.version to use the openstack pypi mirror

Change-Id: Ia142c7371064613ca33b24e5e7cc8307afdf8357
Merge "WSME: update to 0.6"
Merge "Add oslo.version to the list of projects"
Merge "Add decorator to the global requirements"