Increase sphinx pin now that 1.2.1 is out

1.2.1 fixes the bug that was in 1.2 - so we should go ahead and update.
Keep the pin at below 1.3 because sphinx breaks things.

Change-Id: I63c6159eb23430a181eb20016b35366c2fbbf9f8
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 "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"
Merge "Increase sphinx pin now that 1.2.1 is out"