Drop Essex and Folsom support

Currently the OBS parts. I guess develcloud1 will follow very soon...
Merge pull request #22 from saschpe/master-drop-essex-folsom

Drop Essex and Folsom ci.o.o testing
kill the openSUSE 12.2 cleanvm worker
Add unittest testconfig for Havana packages
Track oslo.sphinx and oslo.config in C:OS:Havana:Staging
Unit tests for Havana
Fixup combination filter (missing ||)
Havana doesn't contain quantum
Don't test django_openstack_auth

It is currently not staged
Add workaround for debian image dhcp failure on 13.1/Factory
Support Devel:Cloud:2.5 (i.e. develcloud2.5)
Track upstream for Devel:Cloud:2.5

Drop Devel:Cloud:Dummy target now that we have a second choice.
SLE_11_SP3 is the default BUILD_DIST for all products this script
currently supports (2.0, 2.5).
fixup! Support Devel:Cloud:2.5 (i.e. develcloud2.5)
move until after quickstart

When SuSEfirewall2 is installed, quickstart flushes the
rules which causes the Checksum rule to be lost
Revert "Don't test django_openstack_auth"

This reverts commit 2f8d865eff1c8bc202a18b883b47a5e9d73421e3.
track-upstream: leave files as is when build failed
make sure the caching directory exists

If the caching directories are not yet setup
trackupstream will create them
Using trackupstream on a workstation is easier this way.
use consistent paths for cache dir setup
openSUSE 12.2 unit test workers were removed

Therefore remove all jobs related to it, otherwise CI jobs will
hang infintely waiting for the unit test worker to become
available.
Fix django_openstack_auth unittesting