Fix the dhcp clean up for Ubuntu 12.04 or newer's postinstall.sh

For more info, please see the Launchpad issue at https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/910108
adding an option to skip iso transfer
CENTOS 6.3: Trim the package list
CENTOS 6.3:  Change VBox options to work on machines without VT extensions
CENTOS 6.3: Make the 32bit basebox build

Rename the veewee user to vagrant.
Make the entire build work.
Merge pull request #455 from edgester/centos6-fixes

Fixes for Centos 6.3 on 32bit
DEBIAN 6.0.5: Change the mirror server to ftp.us.debian.org

This makes the "mirror does not support this release" error go away.
DEBIAN 6.0.6: Make the VM wor better on machines without VT extensions
add SLES-11-SP2-DVD-x86_64-GM template
Update doc/kvm.md

``pool_name`` option is now working out of the box.
Update veewee.gemspec

Update fog dependency to *at least* 1.8 (for libvirt/kvm improvements)
Adapt CentOS-6.2-x86_64-netboot template for 6.3.
Merge pull request #460 from lotia/centos-6.3-netboot-template

Adapt CentOS-6.2-x86_64-netboot template for 6.3.
Merge pull request #458 from vdemeester/master

Quick update on kvm doc - Bump fog version to 1.8
added dkms to allow virtualbox dkms module to be created during virtualbox installation time
fix mixed options from symbols to strings for tests
KVM provider: Fixed undef method
KVM provider: Fixed Windows support

* fixed adding of floppy drive to KVM machines
* support for adding virtio drivers to KVM machines
Windows 8 templates

Added 32-bit and 64-bit templates for Windows 8. The ISO for the Windows 8 90 day evaluation will be used.
Merge pull request #466 from ffeldhaus/windows8-templates

Windows 8 templates