use vbox:OSType Linux not Linux_64

Linux_64 is not supported on VirtualBox 4.2, and 4.3 seems fine
with Linux.
scrap pointless 45 second tcpdump per interface

This is only useful on networks with LLDP.
ensure glance shared disk is ext3
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
fix ordering of sudo package
ditch SLE-11-SP3-SDK-Updates

None of the packages we get from SDK have updates (and even if they
do later, we probably don't need them).
we should be able to live without SLES11-SP3-Updates

With the quick way of building, the important updates are
already in SUSE-CLOUD-3-DEPS.
document both fast and slow ways of building images
sles11-sp3 appliance doesn't need Cloud packages
Merge branch 'repo-docs' into working