if a proxy gets defined, make sure YUM uses it
don't remove puppetlabs and epel

Removing puppetlabs breaks installation of the RPM which is not removed that
created the repo definition. It is reasonable to keep since Puppet remains
installed.  EPEL is reasonable to have on a base box as well.
Update CentOS-6.4-x86_64-minimal definition with latest veewee template

Update all packages
Delete unused CentOS-6.4-x86_64-maestro, it's the same as minimal
Add a rakefile to build the vms
Use .veewee_params to be able to build the box when using a proxy
sh doesn't find .veewee_params, use full path
Anything using yum needs the proxy configured
Merge branch 'master' into internode
apply latest changes to definition to internode one