make DRBD disk larger and first

It needs to be at least 2GB since database and rabbit both need 1GB
until we support floating sizes.  It needs to be first because the
disk claiming code isn't particularly cunning yet.
set up glance shared mount
drop cinder shared disk

For this to work in the cluster we'd need cLVM; simpler to keep on the
compute node for now.
don't clean up patches

This allows us to easily check which patches were provisioned.
add bkutil's new dashboards branch
bypass the provisioner's check for HAE repos

Since we're already providing these via the special SUSE-CLOUD-3-DEPS
installation media in /srv/tftpboot/suse-11.3/install