Set python hash seed to 0 in tox.ini

New tox (>=1.7.0) sets a random python hash seed by default. This is
generally good for testing because it will help keep projects working
regardless of the hash seed, but glance unittests don't currently pass
with a random hash seed so set it to the python default seed.

This change will allow us to use new tox again and remove the
restriction on tox<=1.6.1 to run unittests.

Redundant setenvs for specific test envs are removed to prevent them
from overriding the PYTHONHASHSEED value.

Note this change will need to be backported to the stable branches to
keep unittests there working with new tox as well.

Change-Id: Id0175b7a95c0ad07798b4603b5d1dd8e6d414561
(cherry picked from commit 90c07019350adc301fa5d91239ebfb16fcac775f)
Bump stable/icehouse next version to 2014.1.3

Bump stable/icehouse next version to 2014.1.3

Change-Id: I6353a6751b20db64a322b512271c9a8d6a1c412d
Signed-off-by: Chuck Short <chuck.short@canonical.com>
Enforce image_size_cap on v2 upload

image_size_cap should be checked and enforced on upload

Enforcement is in two places:
- on image metadata save
- during image save to backend store

(cherry picked from commit 92ab00fca6926eaf3f7f92a955a5e07140063718)
Conflicts:
	glance/location.py
	glance/tests/functional/v2/test_images.py

Closes-Bug: 1315321
Change-Id: I45bfb360703617bc394e9e27fe17adf43b09c0e1
Co-Author: Manuel Desbonnet <manuel.desbonnet@hp.com>
Merge "Set python hash seed to 0 in tox.ini" into stable/icehouse
Merge "Bump stable/icehouse next version to 2014.1.3" into stable/icehouse
Merge remote-tracking branch 'upstream/stable/icehouse' into stable/icehouse