Add wrapt library

The wrapt library makes decorators much more useful than
with just regular decorators, especially in cases where
the decorator wants to know what object it is attached to.

Docs @ http://wrapt.readthedocs.org/
Module @ https://pypi.python.org/pypi/wrapt

Projects that would like to use this to create a more
universal decorator method:
 - TaskFlow
 - Rally
 - Others?

Change-Id: I26e78d34c2d12b5c9dbb520a09b618c579b84084
Add pyca/cryptography to global requirements

barbican would like to convert some of its internal encryption
to using the cryptography project from PyCA. Specifically our
dev plugin would benefit from a switch to cryptography as it
allows us to use AEAD modes. We will also need this in the
future as cryptography adds X509 and CMS support.

The project supports Python 2.6-3.4 as well as PyPy and is being
packaged for FreeBSD, Debian, and Ubuntu.

Additionally, this is already a second-level requirement when
using PyOpenSSL.

Change-Id: Ic0d508faef9de347bf7cb2436a433096779cf8ac
django_compressor: bump to 1.4

The 1.4 release brings Python 3 support.

Change-Id: I3026ecc1854298bd4f89512b9a599b5a1a3d7642
Netifaces: bump to 0.10.4

This release works with Python 3.

Change-Id: I716ed58e650ce249d6cbcdfda1253b4bee6a9aa6
Merge "Add wrapt library"
Merge "Add pyca/cryptography to global requirements"
Merge "Netifaces: bump to 0.10.4"
request-kerberos

Kerberos requires an additional requests library to perform
SPNEGO

The 0.5 version was just released.  Older Versions of the library
are packaged for distributions already.  They will need to be updated
to this version.  The 0.5 version is required to pass the Python 3.3
requirement enforced on the clients.  Older versions break in py33

Change-Id: I2100915f123c0fea41d5b17d01947901aa0119c5
Merge "request-kerberos"
Merge "django_compressor: bump to 1.4"