fix image cache dir
ADd SERVICE_TIMEOUT
Update functions from devstack
Upgrade scripts:
* keystone
* glance
Upgrade scripts:

* cinder
* nova

* add stop-base to replace <base>/devstack/unstack.sh
Call create_nova_conf in upgrade_nova
Mova database save to save-state
Add upgrade-swift
sudo rsync in pre-ptarget
Swift updates:

* Shut down swift in stop-base
* Save base swift config files
Fix bug 1119789 work-around in update-keystone

It needed to respect previous values in the extra colum.
New migration issue: admin roles dropped
Allow base and target phases to run separately
A handful of upgrade fixes:

* More swift fixes
* Need to set default compute driver
* Add rpc to upgrade_glance
Use folsom-era cirros image for testing
Update docs
Add clean.sh

clean.sh gets rid of all residue of running Grenade (except installed
packages and pip modules).

Check that, it eradicates rabbitmq-server (and erlang dependencies)
and mysql-server.
Save ebtables/iptables state
Wait for javelin instance to start