Mildly wound the interlopers

This commit removes all the references to nose in the tempest tree.
Moving forward trying to support nose which doesn't support some of the
features we rely on in tempest is increasingly difficult. Please refer
to this thread:

http://lists.openstack.org/pipermail/openstack-dev/2014-January/024673.html

for a more detailed explanation and the discussion regarding this.

Change-Id: I3dee566d33efe1fb7808817b885d1680736abe6a
Merge "Mildly wound the interlopers"